  It is conjectured that the regularized double shuffle relations give all
algebraic relations among the multiple zeta values, and hence all other
algebraic relations should be deduced from the regularized double shuffle
relations. In this paper, we provide as many as the relations which can be
derived from the regularized double shuffle relations, for example, the
weighted sum formula of L. Guo and B. Xie, some evaluation formulas with even
arguments and the restricted sum formulas of M. E. Hoffman and their
generalizations.
