diff --git a/src/calc.rs b/src/calc.rs
index 020ac9e..04a4c4c 100644
--- a/src/calc.rs
+++ b/src/calc.rs
@@ -7,7 +7,7 @@ use crate::calc::entries::CalculatorEntry;
 use confy::{load, store};
 use entries::{Entry, Number};
 use errors::{CalculatorError, CalculatorResult};
-use operations::{CalculatorOperation, CalculatorStateChange, MacroState, OpArgs};
+use operations::{ArithmeticOperation,CalculatorOperation, CalculatorStateChange, MacroState, OpArgs};
 use serde::ser::Serializer;
 use serde::{Deserialize, Serialize};
 use std::collections::{BTreeMap, HashMap};
@@ -214,29 +214,29 @@ impl Calculator {
                                         _ => Err(CalculatorError::ParseError),
                                 }
                         }
-                        '+' => self.op(CalculatorOperation::Add),
-                        '-' => self.op(CalculatorOperation::Subtract),
-                        '*' => self.op(CalculatorOperation::Multiply),
-                        '/' => self.op(CalculatorOperation::Divide),
-                        'n' => self.op(CalculatorOperation::Negate),
-                        '|' => self.op(CalculatorOperation::AbsoluteValue),
-                        'i' => self.op(CalculatorOperation::Inverse),
-                        '%' => self.op(CalculatorOperation::Modulo),
+                        '+' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Add)),
+                        '-' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Subtract)),
+                        '*' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Multiply)),
+                        '/' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Divide)),
+                        'n' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Negate)),
+                        '|' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::AbsoluteValue)),
+                        'i' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Inverse)),
+                        '%' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Modulo)),
+                        '?' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::IntegerDivide)),
+                        's' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Sin)),
+                        'c' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Cos)),
+                        't' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Tan)),
+                        'S' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::ASin)),
+                        'C' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::ACos)),
+                        'T' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::ATan)),
+                        'v' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Sqrt)),
+                        '^' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Pow)),
+                        'l' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Log)),
+                        'L' => self.op(CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Ln)),
+                        // Special
                         '\\' => self.op(CalculatorOperation::Drop),
-                        '?' => self.op(CalculatorOperation::IntegerDivide),
                         ' ' => self.op(CalculatorOperation::Dup),
                         '>' => self.op(CalculatorOperation::Swap),
-                        's' => self.op(CalculatorOperation::Sin),
-                        'c' => self.op(CalculatorOperation::Cos),
-                        't' => self.op(CalculatorOperation::Tan),
-                        'S' => self.op(CalculatorOperation::ASin),
-                        'C' => self.op(CalculatorOperation::ACos),
-                        'T' => self.op(CalculatorOperation::ATan),
-                        'v' => self.op(CalculatorOperation::Sqrt),
-                        '^' => self.op(CalculatorOperation::Pow),
-                        'l' => self.op(CalculatorOperation::Log),
-                        'L' => self.op(CalculatorOperation::Ln),
-                        // Special
                         'u' => self.op(CalculatorOperation::Undo),
                         'U' => self.op(CalculatorOperation::Redo),
                         // State modifiers
@@ -478,7 +478,7 @@ impl Calculator {
                 let entry = self.peek(0)?;
                 let f = match entry {
                         Entry::Number(Number { value }) => value,
-                        // Entry::Vector(_) => return Err(CalculatorError::TypeMismatch),
+                        Entry::Vector(_) => return Err(CalculatorError::TypeMismatch),
                 };
                 // Ensure this can be cast to a usize
                 if !f.is_finite() || f.is_sign_negative() {
@@ -507,63 +507,63 @@ impl Calculator {
                         }
                 }
                 let state_change = match op {
-                        CalculatorOperation::Add => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Add) => {
                                 self.binary_op(|[a, b]| Ok(OpArgs::Unary(b.add(a)?)))
                         }
-                        CalculatorOperation::Subtract => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Subtract) => {
                                 self.binary_op(|[a, b]| Ok(OpArgs::Unary(b.sub(a)?)))
                         }
-                        CalculatorOperation::Multiply => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Multiply) => {
                                 self.binary_op(|[a, b]| Ok(OpArgs::Unary(b.mul(a)?)))
                         }
-                        CalculatorOperation::Divide => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Divide) => {
                                 self.binary_op(|[a, b]| Ok(OpArgs::Unary(b.div(a)?)))
                         }
-                        CalculatorOperation::IntegerDivide => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::IntegerDivide) => {
                                 self.binary_op(|[a, b]| Ok(OpArgs::Unary(b.int_divide(a)?)))
                         }
-                        CalculatorOperation::Negate => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Negate) => {
                                 self.unary_op(|a| Ok(OpArgs::Unary(a.negate()?)))
                         }
-                        CalculatorOperation::AbsoluteValue => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::AbsoluteValue) => {
                                 self.unary_op(|a| Ok(OpArgs::Unary(a.abs()?)))
                         }
-                        CalculatorOperation::Inverse => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Inverse) => {
                                 self.unary_op(|a| Ok(OpArgs::Unary(a.inverse()?)))
                         }
-                        CalculatorOperation::Modulo => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Modulo) => {
                                 self.binary_op(|[a, b]| Ok(OpArgs::Unary(b.modulo(a)?)))
                         }
-                        CalculatorOperation::Sin => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Sin) => {
                                 let angle_mode = self.angle_mode;
                                 self.unary_op(|a| Ok(OpArgs::Unary(a.sin(angle_mode)?)))
                         }
-                        CalculatorOperation::Cos => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Cos) => {
                                 let angle_mode = self.angle_mode;
                                 self.unary_op(|a| Ok(OpArgs::Unary(a.cos(angle_mode)?)))
                         }
-                        CalculatorOperation::Tan => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Tan) => {
                                 let angle_mode = self.angle_mode;
                                 self.unary_op(|a| Ok(OpArgs::Unary(a.tan(angle_mode)?)))
                         }
-                        CalculatorOperation::ASin => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::ASin) => {
                                 let angle_mode = self.angle_mode;
                                 self.unary_op(|a| Ok(OpArgs::Unary(a.asin(angle_mode)?)))
                         }
-                        CalculatorOperation::ACos => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::ACos) => {
                                 let angle_mode = self.angle_mode;
                                 self.unary_op(|a| Ok(OpArgs::Unary(a.acos(angle_mode)?)))
                         }
-                        CalculatorOperation::ATan => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::ATan) => {
                                 let angle_mode = self.angle_mode;
                                 self.unary_op(|a| Ok(OpArgs::Unary(a.atan(angle_mode)?)))
                         }
-                        CalculatorOperation::Sqrt => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Sqrt) => {
                                 self.unary_op(|a| Ok(OpArgs::Unary(a.sqrt()?)))
                         }
-                        CalculatorOperation::Log => self.unary_op(|a| Ok(OpArgs::Unary(a.log()?))),
-                        CalculatorOperation::Ln => self.unary_op(|a| Ok(OpArgs::Unary(a.ln()?))),
-                        CalculatorOperation::Pow => {
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Log) => self.unary_op(|a| Ok(OpArgs::Unary(a.log()?))),
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Ln) => self.unary_op(|a| Ok(OpArgs::Unary(a.ln()?))),
+                        CalculatorOperation::ArithmeticOperation(ArithmeticOperation::Pow) => {
                                 self.binary_op(|[a, b]| Ok(OpArgs::Unary(b.pow(a)?)))
                         }
                         CalculatorOperation::Dup => {
@@ -741,7 +741,6 @@ impl Calculator {
                 &mut self,
                 op: impl FnOnce(Entry) -> CalculatorResult<OpArgs>,
         ) -> CalculatorResult<CalculatorStateChange> {
-                // TODO: Use peek instead of stack.get()
                 let arg = self.peek(0)?;
                 Ok(CalculatorStateChange {
                         pop: OpArgs::Unary(arg.clone()),
diff --git a/src/calc/entries.rs b/src/calc/entries.rs
index 4fde277..9a294a0 100644
--- a/src/calc/entries.rs
+++ b/src/calc/entries.rs
@@ -1,5 +1,6 @@
 // use super::operations::CalculatorStateChange;
-use super::errors::CalculatorResult;
+// TODO: This file kina blows. Tons of repetition. Do not know how to fix yet though
+use super::errors::{CalculatorError, CalculatorResult};
 use super::types::CalculatorAngleMode;
 use crate::calc::CalculatorDisplayMode;
 use serde::{Deserialize, Serialize};
@@ -11,6 +12,15 @@ pub struct Number {
         pub value: f64,
 }
 
+impl Number {
+        fn binary_op(arg: &Entry, op: impl Fn(&Number) -> Number) -> CalculatorResult<Entry> {
+                match arg {
+                        Entry::Number(number) => Ok(Entry::Number(op(number))),
+                        Entry::Vector(vector) => Ok(vector.map_into(op)),
+                }
+        }
+}
+
 impl PartialEq for Number {
         fn eq(&self, other: &Self) -> bool {
                 if self.value.is_nan() && other.value.is_nan()
@@ -29,17 +39,52 @@ impl PartialEq for Number {
         }
 }
 
-// #[derive(Clone, PartialEq, Debug, Serialize, Deserialize)]
-// pub struct Vector {
-//         pub value: Vec<Number>,
-// }
+#[derive(Clone, PartialEq, Debug, Serialize, Deserialize)]
+pub struct Vector {
+        pub direction: bool,
+        pub values: Vec<Number>,
+}
+
+impl Vector {
+        fn binary_op(
+                &self,
+                arg: &Entry,
+                op: impl Fn((&Number, &Number)) -> Number,
+        ) -> CalculatorResult<Entry> {
+                match arg {
+                        // Entry::Number(number) => Ok(Entry::Number(op(number))),
+                        Entry::Number(number) => Ok(self.map_into(|t| op((t, number)))),
+                        Entry::Vector(vector) => {
+                                if self.values.len() != vector.values.len() {
+                                        return Err(CalculatorError::ArithmeticError);
+                                }
+
+                                Ok(Entry::Vector(Vector {
+                                        values: self
+                                                .values
+                                                .iter()
+                                                .zip(vector.values.iter())
+                                                .map(op)
+                                                .collect(),
+                                        ..*self
+                                }))
+                        }
+                }
+        }
+
+        pub fn map_into(&self, op: impl Fn(&Number) -> Number) -> Entry {
+                Entry::Vector(Vector {
+                        values: (self.values.iter().map(op).collect()),
+                        ..*self
+                })
+        }
+}
 
-// TODO: Remove the copy trait
 #[derive(Clone, PartialEq, Debug, Serialize, Deserialize)]
 #[serde(tag = "type")]
 pub enum Entry {
         Number(Number),
-        // Vector(Vec<Number>),
+        Vector(Vector),
         // Matrix(Vec<Vec<Number>>),
 }
 
@@ -47,127 +92,127 @@ impl CalculatorEntry for Entry {
         fn format_entry(&self, display_mode: &CalculatorDisplayMode) -> String {
                 match self {
                         Self::Number(number) => number.format_entry(display_mode),
-                        // Self::Vector(vector) => vector.add(),
+                        Self::Vector(vector) => vector.format_entry(display_mode),
                 }
         }
         fn is_valid(&self) -> bool {
                 match self {
                         Self::Number(number) => number.is_valid(),
-                        // Self::Vector(vector) => vector.add(),
+                        Self::Vector(vector) => vector.is_valid(),
                 }
         }
         fn add(&self, arg: Self) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.add(arg),
-                        // Self::Vector(vector) => vector.add(),
+                        Self::Vector(vector) => vector.add(arg),
                 }
         }
         fn sub(&self, arg: Self) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.sub(arg),
-                        // Self::Vector(vector) => vector.sub(),
+                        Self::Vector(vector) => vector.sub(arg),
                 }
         }
         fn mul(&self, arg: Self) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.mul(arg),
-                        // Self::Vector(vector) => vector.mul(),
+                        Self::Vector(vector) => vector.mul(arg),
                 }
         }
         fn div(&self, arg: Self) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.div(arg),
-                        // Self::Vector(vector) => vector.div(),
+                        Self::Vector(vector) => vector.div(arg),
                 }
         }
         fn int_divide(&self, arg: Self) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.int_divide(arg),
-                        // Self::Vector(vector) => vector.int_divide(),
+                        Self::Vector(vector) => vector.int_divide(arg),
                 }
         }
         fn negate(&self) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.negate(),
-                        // Self::Vector(vector) => vector.negate(),
+                        Self::Vector(vector) => vector.negate(),
                 }
         }
         fn abs(&self) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.abs(),
-                        // Self::Vector(vector) => vector.abs(),
+                        Self::Vector(vector) => vector.abs(),
                 }
         }
         fn inverse(&self) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.inverse(),
-                        // Self::Vector(vector) => vector.inverse(),
+                        Self::Vector(vector) => vector.inverse(),
                 }
         }
         fn modulo(&self, arg: Self) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.modulo(arg),
-                        // Self::Vector(vector) => vector.modulo(),
+                        Self::Vector(vector) => vector.modulo(arg),
                 }
         }
         fn sin(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.sin(angle_mode),
-                        // Self::Vector(vector) => vector.sin(),
+                        Self::Vector(vector) => vector.sin(angle_mode),
                 }
         }
         fn cos(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.cos(angle_mode),
-                        // Self::Vector(vector) => vector.cos(),
+                        Self::Vector(vector) => vector.cos(angle_mode),
                 }
         }
         fn tan(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.tan(angle_mode),
-                        // Self::Vector(vector) => vector.tan(),
+                        Self::Vector(vector) => vector.tan(angle_mode),
                 }
         }
         fn asin(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.asin(angle_mode),
-                        // Self::Vector(vector) => vector.asin(),
+                        Self::Vector(vector) => vector.asin(angle_mode),
                 }
         }
         fn acos(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.acos(angle_mode),
-                        // Self::Vector(vector) => vector.acos(),
+                        Self::Vector(vector) => vector.acos(angle_mode),
                 }
         }
         fn atan(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.atan(angle_mode),
-                        // Self::Vector(vector) => vector.atan(),
+                        Self::Vector(vector) => vector.atan(angle_mode),
                 }
         }
         fn sqrt(&self) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.sqrt(),
-                        // Self::Vector(vector) => vector.sqrt(),
+                        Self::Vector(vector) => vector.sqrt(),
                 }
         }
         fn log(&self) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.log(),
-                        // Self::Vector(vector) => vector.log(),
+                        Self::Vector(vector) => vector.log(),
                 }
         }
         fn ln(&self) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.ln(),
-                        // Self::Vector(vector) => vector.ln(),
+                        Self::Vector(vector) => vector.ln(),
                 }
         }
         fn pow(&self, arg: Self) -> CalculatorResult<Self> {
                 match self {
                         Self::Number(number) => number.pow(arg),
-                        // Self::Vector(vector) => vector.pow(),
+                        Self::Vector(vector) => vector.pow(arg),
                 }
         }
 }
@@ -194,39 +239,29 @@ impl CalculatorEntry for Number {
                 !self.value.is_nan() && !self.value.is_infinite()
         }
         fn add(&self, arg: Entry) -> CalculatorResult<Entry> {
-                match arg {
-                        Entry::Number(Self { value }) => Ok(Entry::Number(Self {
-                                value: value + self.value,
-                        })),
-                }
+                Number::binary_op(&arg, |b| Self {
+                        value: b.value + self.value,
+                })
         }
         fn sub(&self, arg: Entry) -> CalculatorResult<Entry> {
-                match arg {
-                        Entry::Number(Self { value }) => Ok(Entry::Number(Self {
-                                value: value - self.value,
-                        })),
-                }
+                Number::binary_op(&arg, |b| Self {
+                        value: b.value - self.value,
+                })
         }
         fn mul(&self, arg: Entry) -> CalculatorResult<Entry> {
-                match arg {
-                        Entry::Number(Self { value }) => Ok(Entry::Number(Self {
-                                value: value * self.value,
-                        })),
-                }
+                Number::binary_op(&arg, |b| Self {
+                        value: b.value * self.value,
+                })
         }
         fn div(&self, arg: Entry) -> CalculatorResult<Entry> {
-                match arg {
-                        Entry::Number(Self { value }) => Ok(Entry::Number(Self {
-                                value: value / self.value,
-                        })),
-                }
+                Number::binary_op(&arg, |b| Self {
+                        value: b.value / self.value,
+                })
         }
         fn int_divide(&self, arg: Entry) -> CalculatorResult<Entry> {
-                match arg {
-                        Entry::Number(Self { value }) => Ok(Entry::Number(Self {
-                                value: value.div_euclid(self.value),
-                        })),
-                }
+                Number::binary_op(&arg, |b| Self {
+                        value: b.value.div_euclid(self.value),
+                })
         }
         fn negate(&self) -> CalculatorResult<Entry> {
                 Ok(Entry::Number(Self { value: -self.value }))
@@ -242,11 +277,9 @@ impl CalculatorEntry for Number {
                 }))
         }
         fn modulo(&self, arg: Entry) -> CalculatorResult<Entry> {
-                match arg {
-                        Entry::Number(Self { value }) => Ok(Entry::Number(Self {
-                                value: value % self.value,
-                        })),
-                }
+                Number::binary_op(&arg, |b| Self {
+                        value: b.value % self.value,
+                })
         }
         fn sin(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {
                 Ok(Entry::Number(Self {
@@ -330,11 +363,88 @@ impl CalculatorEntry for Number {
                 }))
         }
         fn pow(&self, arg: Entry) -> CalculatorResult<Entry> {
-                match arg {
-                        Entry::Number(Self { value }) => Ok(Entry::Number(Self {
-                                value: value.powf(self.value),
-                        })),
-                }
+                Number::binary_op(&arg, |b| Self {
+                        value: b.value.powf(self.value),
+                })
+        }
+}
+
+impl CalculatorEntry for Vector {
+        // Misc
+        fn is_valid(&self) -> bool {
+                !self.values
+                        .iter()
+                        .find(|number| !number.is_valid())
+                        .is_some()
+        }
+        fn format_entry(&self, display_mode: &CalculatorDisplayMode) -> String {
+                format!(
+                        "[{}]",
+                        self.values
+                                .iter()
+                                .map(|number| number.format_entry(display_mode))
+                                .collect::<Vec<String>>()
+                                .join("; ")
+                )
+        }
+        // Mathematical operations
+        fn add(&self, arg: Entry) -> CalculatorResult<Entry> {
+                self.binary_op(&arg, |(a, b)| Number {
+                        value: b.value + a.value,
+                })
+        }
+        fn sub(&self, arg: Entry) -> CalculatorResult<Entry> {
+                self.binary_op(&arg, |(a, b)| Number {
+                        value: b.value - a.value,
+                })
+        }
+        fn mul(&self, arg: Entry) -> CalculatorResult<Entry> {
+                self.binary_op(&arg, |(a, b)| Number {
+                        value: b.value * a.value,
+                })
+        }
+        fn div(&self, arg: Entry) -> CalculatorResult<Entry> {
+                self.binary_op(&arg, |(a, b)| Number {
+                        value: b.value / a.value,
+                })
+        }
+        fn int_divide(&self, arg: Entry) -> CalculatorResult<Entry> {
+                self.binary_op(&arg, |(a, b)| Number {
+                        value: b.value.div_euclid(a.value),
+                })
+        }
+        fn negate(&self) -> CalculatorResult<Entry> {
+                Ok(self.map_into(|n| Number { value: -n.value }))
+        }
+        fn abs(&self) -> CalculatorResult<Entry> {
+                Ok(self.map_into(|n| Number {
+                        value: n.value.abs(),
+                }))
+        }
+        fn inverse(&self) -> CalculatorResult<Entry> {
+                Ok(Entry::Vector(Vector {
+                        direction: !self.direction,
+                        ..*self
+                }))
+        }
+        fn modulo(&self, arg: Entry) -> CalculatorResult<Entry> {
+                self.binary_op(&arg, |(a, b)| Number {
+                        value: b.value % a.value,
+                })
+        }
+        fn sin(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {}
+        fn cos(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {}
+        fn tan(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {}
+        fn asin(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {}
+        fn acos(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {}
+        fn atan(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {}
+        fn sqrt(&self) -> CalculatorResult<Entry> {}
+        fn log(&self) -> CalculatorResult<Entry> {}
+        fn ln(&self) -> CalculatorResult<Entry> {}
+        fn pow(&self, arg: Entry) -> CalculatorResult<Entry> {
+                self.binary_op(&arg, |(a, b)| Number {
+                        value: b.value.powf(a.value),
+                })
         }
 }
 
diff --git a/src/calc/operations.rs b/src/calc/operations.rs
index 4daff68..3161b07 100644
--- a/src/calc/operations.rs
+++ b/src/calc/operations.rs
@@ -1,8 +1,8 @@
 use super::entries::Entry;
 use serde::{Deserialize, Serialize};
-/// Operations that can be sent to the calculator such as +, -, or undo
+
 #[derive(PartialEq, Debug, Serialize, Deserialize)]
-pub enum CalculatorOperation {
+pub enum ArithmeticOperation {
     Add,
     Subtract,
     Multiply,
@@ -12,7 +12,6 @@ pub enum CalculatorOperation {
     Inverse,
     Modulo,
     IntegerDivide,
-    //Remainder,
     Sin,
     Cos,
     Tan,
@@ -20,12 +19,16 @@ pub enum CalculatorOperation {
     ACos,
     ATan,
     Sqrt,
-    Undo,
-    Redo,
     Pow,
-    // Factorial,
     Log,
     Ln,
+}
+/// Operations that can be sent to the calculator such as +, -, or undo
+#[derive(PartialEq, Debug, Serialize, Deserialize)]
+pub enum CalculatorOperation {
+    ArithmeticOperation(ArithmeticOperation),
+    Undo,
+    Redo,
     Drop,
     Dup,
     Swap,