Recent papers by Ron Umble
Higher Homotopy Hof Algebras Found: A Ten Year Retrospective, preprint
Some Naturally Occurring Examples of A-Infinity Bialgebras (with A. Berciano), preprint
Gereralizations of the Brachistochrone Problem (with J. Gemmer and M. Nolan), preprint
Periodic Orbits for Billiards on an Equilateral Triangle (with Andrew Baxter), American Mathematical Monthly, 115, No. 8, (2008), 479-491
Matrads, A_\infty-Bialgebas and the Polytopes KK (with Samson Saneblidze), J. Homology, Homotopy and Appl., to appear; preprint
Structure Relations in Special A_\infty-Bialgebras, J. Mathematical Sciences, (2008) 186-196. Translated from: Sovremennaya Matematika i Ee Prilozheniya (Contemporary Mathematics and its Applications), Vol. 43, Topology and Its Applications, (2006) 136-143.
The Biderivative and A_\infty-Bialgebras (with S. Saneblidze), J. Homology, Homotopy and Appl., 7 No. 2 (2005), 161-177
Minimal Paths on Some Simple Surfaces with Singularities (with J. Mohler), Pi Mu Epsilon J., 12 No. 8, (2008) 461-472
Diagonals on the Permutahedra, Multiplihedra and Associahedra (with S. Saneblidze), J. Homology, Homotopy and Appl., 6 No. 1 (2004), 363-411
A Diagonal on the Associahedra (with S. Saneblidze), preprint
Obstructions to Deformations of DG Modules (with T. Armstrong), Proc. AMS, 129 No. 12 (2001), 3447-3452
The Deformation Complex for DG Hopf Algebras, J. Pure and Applied Algebra, 106 (1996), 199-222
