2019-05-14 TeXコードの実験 05-14B(メモ編) はてなブログ \(\coprod_x A_x\) \( p:\coprod_{x\in X}\sigma_x \rightarrow \coprod_{x\in X} A_x \)\(\coprod_{x\in X}\sigma_x \) \( (\coprod_{U\in |Open(X)|} A(U))\times X \) \( \{(a, x) \in (\coprod_{U\in |Open(X)|} A(U))\times X | x \in def(a)\} \)