A SEIFERT-VAN KAMPEN THEOREM IN NON-ABELIAN ALGEBRA

被引:1
|
作者
Duckerts-Antoine, Mathieu [1 ]
Van Der Linden, Tim [2 ]
机构
[1] Univ Coimbra, Dept Matemat, Apartado 3008, P-3001501 Coimbra, Portugal
[2] Catholic Univ Louvain, Inst Rech Math & Phys, Chemin Cyclotron 2 Bte L7-01-02, B-1348 Louvain La Neuve, Belgium
关键词
derived functor; fundamental group; homology coproduct theorem; categorical Galois theory; algebraically coherent semi-abelian category; GALOIS THEORY; HOPF FORMULAS; HOMOLOGY; CATEGORIES; FACTORIZATION; EXTENSIONS; FIBRATION; HOMOTOPY;
D O I
10.4310/HHA.2018.v20.n2.a5
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We prove a variation on the Seifert-van Kampen theorem in a setting of non-abelian categorical algebra, providing sufficient conditions on a functor F, from an algebraically coherent semi-abelian category with enough projectives to an almost abelian (= Raikov semiabelian) category, for the preservation of pushouts of split monomorphisms by the left derived functor of F.
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页码:79 / 103
页数:25
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