🌐EnglishEnglishDeutschEspañolFrançaisNederlandsPortuguêsРусский한국어中文日本語EntityQ1064342· pop 14· linked from 31 articlessnake lemmatool used in mathematicsAvailable in 13 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsHebrewHungarianNederlandsUkrainianConnectionsexact sequenceEntitymathematicsEntityCategoriesHomological algebraLemmas in category theory