All Questions

I am revising a paper, and a referee of that paper asked if the following little lemma we proved there is known: ``Let $X$ be an $n\times n$ upper triangular unipotent matrix over $\mathbb R$. There ...

Let $V$ denote $\mathbb{Z}^{2g}$ with its standard integral symplectic form $\omega = \sum_{i=0}^{g-1}dx_{2i} \wedge dx_{2i+1}$ (or, the homology lattice of a genus $g$ surface with its intersection ...