In this program
- Wilson's theorem
- Order of elements modulo n
- Chinese remainder theorem
- Applications
- Euler's totient function
- Multiplicative functions
- Quadratic residues and Legendre symbol
- Law of quadratic reciprocity (introduction or proof sketch)
Classical theorems and functions
Law of quadratic reciprocity (introduction or proof sketch)
Number theory · Theoretical / proof-based
Topic
Law of quadratic reciprocity (introduction or proof sketch)
Undergraduate Number Theory — scope drawn from open number theory texts (e.g. Stein / Burton-style OER) and typical US elementary number theory syllabi.