Devmath latest articles

Devmath is the technological branch of Mowse. We mainly write about statistics, machine learning, and data science but also about other topics related to technology.

Differences Between Arrangements, Permutations, and Combinations

counting

This article presents the differences between arrangements, permutations, and combinations in …

Dijkstra's Algorithm - Example

graph-theory shortest-path exercise

Dijkstra's algorithm is a shortest path search algorithm between a source and all other vertices in …

Proof - Cantor's Theorem

proof

This article presents Cantor's theorem as well as its proof.

The '?' Notation in Mathematics: Termial

notation

In his book 'The Art of Computer Science', computer scientist Donald Knuth introduced the '?' …

Usual Derivatives

analysis

A concise guide on the most commonly used derivatives in mathematics.

Johnson's Algorithm - Example

graph-theory shortest-path exercise

Johnson's algorithm is an algorithm for finding the shortest path between every vertex in a graph, …

Pandas: Add a line to a given position in a dataframe

python pandas

This article describes how to add a line to a pandas dataframe at a given position. The code, the …

Pandas: Add a line to the end of a dataframe

python pandas

This article describes how to add a line to a pandas dataframe. The code, the result and the …

Proof: two vertices of equal degrees

graph-theory

In a simple graph (undirected without loop), there is at least two vertices of equal degree.

MINEPI algorithm - Example

data-science data-mining

This article will present the application of the MINEPI algorithm on a simple example.