Distribution of values at tuples of integer vectors under symplectic forms

We investigate lattice-counting problems associated with symplectic forms from the perspective of homogeneous dynamics. In the qualitative direction, we establish an analog of Margulis theorem for symplectic forms, proving density results for tuples of vectors. Quantitatively, we derive a volume formula having a certain growth rate, and use this and Rogers’ formulas for a higher rank Siegel transform to obtain the asymptotic formulas of the counting function associated with a generic symplectic form. We further establish primitive and congruent analogs of the generic quantitative result. For the primitive case, we show that the lack of completely explicit higher moment formulas for a primitive higher rank Siegel transform does not obstruct obtaining quantitative statements.