next up previous
Next: presheaves Up: sheaves Previous: sheaves

A convention.

Before proceeding further, we employ the following convention.

For an open covering $ \{U_\lambda\}_{\lambda \in \Lambda}$ of a topological space $ X$ , we write

% latex2html id marker 1804
$\displaystyle U_{\lambda \mu}=U_\lambda \cap U_\mu ,\qquad
U_{\lambda \mu \nu}=U_\lambda \cap U_\mu \cap U_\nu,
$

and so on.



2017-07-21