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20032009
most citedStatistical topology via Morse theory, persistence and nonparametric estimation

29 citations · 33 across the 4 of their papers we have counts for

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Showing 2004Show all

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math.CT2004

Covering groupoids

Zhi-Ming Luo

Topos properties of the category of covering groupoids over a fixed groupoid are discussed. A classification result for connected covering groupoids over a fixed groupoid analogous…

math.AT2004

Homotopy theory of presheaves of simplicial groupoids

Zhi-Ming Luo

We show that the category of presheaves of simplicial groupoids on a site is a right proper simplicial model category. We define -torsor of presheaf of 2-groupoids…