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Nielsen type numbers and homotopy minimal periods for maps on the 3-nilmanifolds
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作者 Jong Bum LEE 《Science China Mathematics》 SCIE 2008年第3期351-360,共10页
For all continuous maps on the 3-nilmanifolds, we give explicit formulae for a complete computation of the Nielsen type numbers NP_n(f)and Nφ_n(f). The most general cases were explored by Heath and Keppelmann and the... For all continuous maps on the 3-nilmanifolds, we give explicit formulae for a complete computation of the Nielsen type numbers NP_n(f)and Nφ_n(f). The most general cases were explored by Heath and Keppelmann and the complementary part is studied in this paper. While studying the homotopy minimal periods of all maps on the 3-nilmanifolds, we also give a complete description of the homotopy minimal periods for all maps on the 3-nilmanifolds, including a correction to Jezierski and Marzantowicz’s result. 展开更多
关键词 homotopy minimal period nielsen number nielsen type number NILMANIFOLD 55M20 57S30
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环的自映射的最少周期点数 被引量:2
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作者 尤承业 《数学进展》 CSCD 北大核心 1995年第2期155-160,共6页
设X是一个紧致连通的ANR’s,f:X→X是连续映射.于是f有Nielsen型数NF_n(f),它是数集的下界,本文在X是环时,给出NF_n(f)是该数集的下确界,即存在连续映射,使得#Fix(g ̄n)=NF_n(f... 设X是一个紧致连通的ANR’s,f:X→X是连续映射.于是f有Nielsen型数NF_n(f),它是数集的下界,本文在X是环时,给出NF_n(f)是该数集的下确界,即存在连续映射,使得#Fix(g ̄n)=NF_n(f).的一个充分条件. 展开更多
关键词 周期点 nielsen型数 自映射 连续映射
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