# Posts

### Mathematics

In this section, I include a variety of topics relating to mathematics from pure to applied and everything in between.

Proving the Axioms of a Group
Euler's Totient Function
Overton Window Shift Points and Elasticity
Collatz Conjecture
Difference Approximations of the Derivative
Complex Numbers in Julia
Counting Digits
Computing the Modular Inverse
Diophantine Equations
Discrete Random Variables
Distance Between Points
Divisors
Einstein Summation Notation
Equivalence Classes
Finding a Trend Line with Least Squares
Fermat Primality Test
Evaluating Triple Integrals with SymPy_jl
Linear Algebra Operations
Metric Tensors
Midpoint Formula
Norms
Poisson Distributions
Position, Velocity, and Acceleration
Prime Sieve
Properties of Divisibility
Riemann Sums
Rules of Integration
The GCD & LCM
Using Sigmoid Functions
Using Taylor Series
Chinese Remainder Theorem
Centroids
Basic Probability Rules
Applying Fermat's Little Theorem
Areas and Volumes
Metric Spaces
Digital Roots
Computing Geodesics
Deriving Trigonometric Identities
Binet's Formula
How Many Earths
A Fibonacci Implementation
Fermat's Little Theorem
Minimum Paths
Representing Graphs
How To Analyze a Function
Trapezoidal Rule
Linear Interpolation
Horner's Rule
Lagrangian Multipliers
Jacobi Symbols
Intersecting Lines
Cross Product

### Computation

Computational methods, algorithms, and other things related to computer science and engineering.

Rotating Integers
Emacs Survival Guide
Jaro Distance
A* Algorithm in C
Variation on Selection Sort
Bisection Method
Quick Sort
Multidimensional Plots in Julia
Secant Method
Sum of Elements in an Array
Bubble Sort
Plotting Vectors
Iterating Over Partitions
Leveraging the Type System
Peasant Multiplication
Web Scraping and Data Visualization
Levenshtein Distance
Planar Orthogonality
Indexing from One
Binary Search
Right-to-Left Exponentiation
Representing Objects in Julia
Find Max or Min
Building Generators

### Opinions

Opinion pieces covering religion, politics, philosophy. Here be dragons!

### System Operations

Topics relating to Linux, MacOS, system operations, systems administration, and development ops.

Installing Erlang with Kerl
Simple PostgreSQL Setup
Common GPG Functionality

### Code Challenge Solutions

Code challenge solutions from Project Euler, 99 Problems, Codewars, and more. The code is in various languages but mostly C, C++, Julia, and Haskell.

Integer Right Triangles (PE39)
Circular Primes (PE35)
Pentagon Numbers (PE44)
Coded Triangle Numbers (PE42)
Distinct Powers (PE29)
Amicable Numbers (PE21)
Lattice Paths (PE15)
Building a Pile of Cubes