A generalization of formal multiple zeta values related to multiple Eisenstein series and multiple q-zeta values
アブストラクト
I will start with a review of the (formal) multiple zeta values and the extended double shuffle relations. Then, I will introduce the algebra G^f, which should be seen as a simultaneous formalisation of multiple Eisenstein series and q-analogs of multiple zeta values. I will indicate how to obtain a surjective algebra morphism from the algebra G^f onto formal multiple zeta values. This algebra morphism could be seen as a formal version of taking the limit q to 1 or the constant term of q-series. In particular, we can view the algebra G^f as a generalization of formal multiple zeta values.