Every week we dedicate an hour to Beautiful Mathematics – the Mathematics that shows us how Beautiful is our Intellect.

This week, I decided to do three beautiful proofs in this one-hour session…

  • Proof of Fermat’s Little Theorem ( via Combinatorics )

    It uses elementary counting principles. Here is a Wikipedia resource to learn it.
  • Fibonacci Tilling

    This is about how we will prove that the number of ways we can cover a 2xn board with a 2×1 dominoes is the same as F_n – the n-th Fibonacci Number.
    We will also discuss some identities related to the Fibonacci Numbers using this idea of the Tiling.

    For eg: F_0 + F_1 + ... + F_n = F_{n+2} - 1.
  • Sylvester – Gallai Theorem and Extremal Principle

    Here, we will show the proof of the theorem which states that

The Sylvester–Gallai theorem in geometry states that, given a finite number of points in the Euclidean plane, either

  1. all the points lie on a single line; or
  2. there is at least one line which contains exactly two of the points

    This will introduce the students to the idea of the Extremal Principle and the Well Ordering Principle.