English
Number theory
Notes on divisibility, prime numbers, congruences, and the deeper structures behind integer arithmetic. Each piece breaks down a specific theorem, identity, or technique — from Euclidean algorithm fundamentals to modular arithmetic and its applications. The focus is on clear reasoning: why things work, not just how to apply them. A place to build solid intuition for one of mathematics’ oldest and most elegant branches.
Suppose we have a quadratic equation:
Those brain cells won't stretch themselves. Let's try this one:
It is remarkable how easily complexity can emerge from simplicity in mathematics. Take the decimal part of a number and…
Imagine you pick two large random numbers a and b. You write down the fraction a/b. Now the question: what…
Whether you're a math enthusiast or numbers are far from your comfort zone, these math number tricks never fail to…
You know, on a Friday evening you sometimes find yourself thinking about the number π. And there's good reason for…