MONOMORPHISM

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On homotopy regular monomorphisms被引量：2
《Chinese Science Bulletin》1998年第1期27-30,共4页CHEN Jixiang Department of Mathematics, Nankai University, Tianjin 300071, China 
theNationalNaturalScienceFoundationofChina (GrantNo .193710 4 6 ) ;theDoctoralFoundationoftheStateEducationCommissionofChina
A concept of homotopy regular monomorphism is introduced which is strictly between homotopy monomorphism and homotopy equivalence. And it characterizes homotopy equivalence in some sense.
关键词：HOMOTOPY MONOMORPHISM HOMOTOPY EQUALIZER HOMOTOPY REGULAR MONOMORPHISM HOMOTOPY PULL back. 
Homotopy epimorphisms preserve nilpotency
《Chinese Science Bulletin》1996年第4期287-290,共4页林红 沈文淮 左再思 
National Natural Science Foundation of China.
Recall that f: X→Y is a homotopy epimorphism (monomorphism) if given u, v: Y→W(u, v:W→X), u(?)of(?)v(?)f implies u(?)v(f(?)u(?)f(?)v implies u(?)v). In ref. [1], Lin and Shen
关键词：homotopy-epimorphism homotopy-monomorphism nilpotent SPACE P-NILPOTENT space. 
Localization of homotopy epimorphisms and homotopy monomorphisms
《Chinese Science Bulletin》1995年第12期984-987,共4页沈文淮 左再思 
Project supported by the National Natural Science Foundation of China.
Recall that f: X→Y is a homotopy epimorphism (monomorphism), if given u, v: Y→W (u, v: W→X), uofvof implies uv (foufov implies uv). In this note, we shall consider the localization of homotopy epimorphisms andmonom...
关键词：LOCALIZATION HOMOTOPY EPIMORPHISM HOMOTOPY monomorphism. 
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