Multiple zeta value cycles in low weight.

Ismaël Soudères (1, 2)

1 Fakultät für Mathematik der Universität Duisburg-Essen
2 FB6/Institut für Mathematik - Institut für Mathematik [Osnabrück]

In a recent work, the author has constructed two families of algebraic cycles in Bloch cycle algebra over the prjective line minus 3 points that are expected to correspond to multiple polylogarithms in one variable and have a good specialization at 1 related to multiple zeta values. This is a short presentation, by the way of toy examples in low weight ( 5), of this contruc- tion and could serve as an introduction to the general setting. Working in low weight also makes it possible to push ("by hand") the construction further. In particular, we will not only detail the construction of the cycle but we will also associate to these cycles explicit elements in the bar construction over the cycle algebra and make as explicit as possible the "bottow-left" coefficient of the Hodge realization periods matrix. That is, in a few relevant cases we will associated to each cycles an integral showing how the specialization at 1 is related to multiple zeta values. We will be particularly interested in a new weight 3 example .

Mots clés: algebraic cycle; Bloch cycle complex; multiple polylogarithms; higher Chow groups; projective line minus three points; equidimensional cycle; Polylogarithms

Domaines: Géométrie algébrique [math.AG]; Théorie des nombres [math.NT]; K-théorie et homologie [math.KT]

Ismaël Soudères. Multiple zeta value cycles in low weight.. Contemporary mathematics, 2015, Feynman amplitudes, periods and motives, 648, pp.203-247. ⟨10.1090/conm/648/13004⟩. ⟨hal-00787100v2⟩