## Research Talks Given in 2007

- ``Hopf Algebras of Forests," USNA Mathematics Colloquium, February
14, 2007
(slides available).
- ``An Algebra of Arithmetic Functions," USNA Mathematics Colloquium,
September 19, 2007
(slides available).
- ``Unrenormalizing the Positive Integers," combinatorics seminar,
George Washington University, Washington, DC, November 7, 2007
(slides available).
- ``Multiple Zeta Values: From Euler to the Present," MAA Sectional
Meeting, Annapolis, Maryland, November 10, 2007
(slides available).