Abstract Algebra: the basic
Monday, August 21, 2017
Your rich uncle wants you! For motivation, let's consider this practical question. Your uncle owns a necklace shop. He wants to...
Derangments
Tuesday, August 1, 2017
If you ain't one of those normies who go to Youtube to see cat videos, you've probably already checked out Numberphile's lat...
Visible lattice point
Monday, July 3, 2017
Introduction Imagine you're a creepy stalker whose curious pastime is to observe your neighbors through your super-telescope. Y...
Pythagorean Equation
Introduction We're all familiar with the equation $x^2+y^2=z^2 (1)$ describing the relationship between the sides of ...
Partition, Sieve Method and Stirling Number
Sunday, May 14, 2017
Partition: Distinguishability We're interested in the question: how many ways to give out candies to kids? The answers will ...
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