The premature state of “Topology” and “Graph Theory” nourished by “Seven Bridges of Königsberg Problem”

The premature state of  “Topology” and “Graph Theory”  nourished by  “Seven Bridges of Königsberg Problem”
[Aim of this article: To give a brief history of graph theory and topology]  [Note: This article is somewhat technical.] Many many years ago, there was a problem which created a mind-boggling puzzle to the eminent mathematician named Leonard Euler. But this isn’t the main starting of our story. There was a historical city of Königsberg ...

Intuition of Ising 2D Model

Intuition of Ising 2D Model
[ Aim of this article: To introduce the basic idea of Ising 2D model ]  Before we proceed for the exploration, let you rejoice with the historical background of Ising Model. Spontaneous magnetization is a very peculiar property of the ferromagnetic material. So, many physicists in the early twentieth century found this phenomenon curious. Physicists lacked ...