Research and Publications
I am interested in algebra, topology, and combinatorics.
My current research is mainly on multiple zeta
values and related topics. Recent publications:
 (with C. Moen) `Sums of generalized harmonic series,'
Integers 14
(2014), #A46 (11 pp).
 `Quasisymmetric functions and mod p multiple harmonic sums,'
Kyushu J. Math. 69 (2015), 345366.
 `Updown categories: generating functions and universal covers,'
Discrete Math. 339 (2016), 906922; preprint
1207.1705.
 `Harmonicnumber summation identities, symmetric functions,
and multiple zeta values,' Ramanujan J., to appear; preprint
1602.03198.
 `Sums of products of Riemann zeta tails,' Mediterr. J. Math.,
to appear; preprint
1602.03399.
 `On multiple zeta values of even arguments,' Int. J. Number Theory,
to appear; preprint
1205.7051.
Recent presentations:
 ``Labeled Posets, Iterated Integrals, and Nested Sums," AMS Special
Session on Iterated Integrals and Applications, Georgetown University,
Washington, DC, March 8, 2015 (slides available).
 ``Sequential Zeta Values," Number Theory Seminar, MaxPlanckInstitut
für Mathematik, Bonn, Germany, June 17, 2015
(slides available).
 ``Odd Relatives of Multiple Zeta Values," USNA Mathematics Colloquium,
April 6, 2016 (slides available).
 ``Sum Theorems for Multiple Zeta Values, Old and New," Number Theory
Seminar, MaxPlanckInstitut für Mathematik, Bonn, Germany, June 29, 2016
(slides available).
A list of older talks is available, as well as
a full publication list and detailed
research description. Mainly for my own
convenience I have assembled a page of professional
links.
The material above is my own research and a
disclaimer applies to it.

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