比较基本的范畴论读物，适合自学。ThistextandreferencebookonCategoryTheory,abranchofabstractalgebra,isaimednotonlyatstudentsofMathematics,butalsoresearchersandstudentsofComputerScience,Logic,Linguistics,CognitiveScience,Philosophy,andanyoftheotherfieldsthatnowmakeuseofit.