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Degree of a Vertex Undirected Graph: The number of edges incident to the vertex. Digraph (Directed Graph): Split into in-degree (incoming...

Principle of Inclusion and Exclusion This principle is a method for counting the number of elements in the union of several sets. It...

Kayhan Erciyeş writes in the 6th Chapter of his book, "Discrete Mathematics and Graph Theory", the following about Introduction to Number...

Kayhan Erciyeş writes in the 6th Chapter of his book, "Discrete Mathematics and Graph Theory", the following about Sequences, Induction...

Kayhan Erciyeş writes in the 2nd Chapter of his book, "Discrete Mathematics and Graph Theory", the following about the Proving theorem:...

So, finally, I have made the decision, and I decided to give it a try to the product of the Maplesoft. It was not as easy to order the...

I have recently found this mathematical statement of Pál Erdős: If we take two arbitrary numbers, a and b, from the range of [n^2 ......

Goldbach's conjecture is one of the oldest and best-known unsolved problems in number theory and all of mathematics. It states that every...

Here is the code for building up a number pyramid where the line goes from n^2+1 up to (n+1)^2 and the output looks like this (primes are...

I have been focusing on another interesting problem (https://www.ibenedek.com/post/extension-of-the-problem-of-a-b-in-n-2-n-1-2-1-then-a-...

I've just bumped into an interesting method to figure out if p is congruent to 0 modulo 7. So let's take a 3-digit number 378, e.g....

A Pretty good book in English (the Hungarian version is available as well). This book is a must-have read for everybody who would like to...

I have just installed these great applications and am trying to figure out which product would fit my needs until the end of the trial.

We Hungarians are extremely fortunate, this is what I think many times. We have an amazing heritage of these giant mathematicians, John...