sheafification
gluing axiom
/suto3/google.iconsheafification
/suto3/Google画像検索.iconsheafification
/suto3/Google定義検索.icon sheafification
/suto3/wikipedia.iconsheafification
/suto3/weblio.icon sheafification
/suto3/kotobank.icon sheafification
/suto3/jisho.icon sheafification