User:Guy vandegrift/Sandbox

I am creating this subpage to investigate the parsing problem:

$$ ]]]]]]]]]]]]]]]]]\underline{y} =\underline{\underline{G}}\cdot\underline{\widetilde{Y}}\;\Leftrightarrow\; \underline\widetilde{Y} = \underline{\underline G}^{-1}\cdot\underline y $$