I'm taking my first discrete math course. One aspect of functions has me stumped. We're asked to list the functions from a two-element set to a three-element set. And then list all the functions from ...

Discrete mathematics required for Computer Science, including the basics of logic, number theory, methods of proof, sequences, mathematical induction, set theory, counting, and functions. Discrete ...

Read Levin's chapter on functions. Go over the exercises at the end. Note that Levin skips over the more general notion of relation -- he comes to it in a later stage, though. We will talk about ...

ABSTRACT: A friendship graph is a graph consisting of cliques sharing a common vertex. In this paper we investigate the maximum number of elements in an optimal friendship decomposition of graphs of ...

Abstract: In this article we find the sharp error term in an ${\BBZ}^2$-three circles theorem for discrete harmonic functions on $\BB{Z}^2$. The proof is highly ...