Welcome to GDEq.org!

"$pdq$"$\in {\mathrm{E}\mathrm{x}\mathrm{t}}_{{𝒞}}^{k-1}({𝒞}{\mathrm{\Lambda }}^1,{𝒞}\mathrm{D}\mathrm{i}\mathrm{f}\mathrm{f}({\overline{\mathrm{\Lambda }}}^n,{𝒞}{\mathrm{\Lambda }}^1\otimes {\overline{\mathrm{\Lambda }}}^{n-k-1}))$

where $k$ is the number of the lines.