Auteur: Joel Friedman

Sexual abuse of patients has received much press in recent years. More victims have come forward documenting their experiences with professionals who abuse fiduciary and confidential relationships by …

Recently, many political voices have indicated a strong desire to track down absent fathers who have absconded without fulfilling child support obligations to their biological or adopted children. Th …

Most people tend to view number theory as the very paradigm of pure mathematics. With the advent of computers, however, number theory has been finding an increasing number of applications in practica …

A $d$-regular graph has largest or first (adjacency matrix) eigenvalue $/lambda_1=d$. Consider for an even $d/ge 4$, a random $d$-regular graph model formed from $d/2$ uniform, independent permutatio …

In this paper the author establishes some foundations regarding sheaves of vector spaces on graphs and their invariants, such as homology groups and their limits. He then uses these ideas to prove th …