Introduction to Number Theory, Part 1: Divisibility

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The first video in a series about elementary number theory, following the book by Underwood Dudley. We define the basic concept of divisibility, and prove a fundamental lemma.

Intro:(0:00)
Definition of Divisibility:(6:40)
Our First Theorem:(9:00)
  1. K-Theory
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This is a great little series, and much appreciated refresher on Number Theory. The Underwood textbook you're using is the one I used when I took my first number theory course. Also, I LOVE the bit of trivia on the box at the end of a proof -- did not know that Paul Halmos introduced that. According to his bio, he claims to have invented the "iff" notation as well.

johnrobin