Dimensions of Spaces of Siegel Cusp Forms of Degree Two and Three

Conjugacy classes of $Sp(2, Z)$ Dimension formula for the vector space of cusp forms of degree two with respect to $Sp(2, Z)$ Representatives of conjugacy classes of elements of $Sp(3, Z)$ in $Sp(3, R)$ Contributions from conjugacy classes in $/triangle/cup/triangle_1 /cup/triangle_2/cup/triangle_0$ Contributions from conjugacy classes in $/triangle_0$.