Los Angeles Math Circle |

## 11/15 -- Group B: Quadratic Reciprocity and Extensions to Cryptography (Paul Bunn)We will begin with a review of basic number theory/abstract
algebra, discussing the "integers modulo N." We will move on to
discussions of how to determine if a number is a "quadratic residue"
modulo N, introducing the Legendre and Jacobi symbols. We'll conclude
by using these tools to build an encryption scheme, which we'll play
around with at the end. ## Handouts: |