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# Questions

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### What is geometrically the Pontryagin class?

dec 23 at 13:23 Liviu Nicolaescu 11.3k12033

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### Estimate on currents in Cayley graphs

feb 18 at 12:35 Antoine 1,010111

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### what is a spinor structure?

feb 25 at 22:01 Branimir Ćaćić 49548

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### Non-isomorphic groups with the same oriented Cayley graph

mar 2 12 at 21:48 John McKay 1732

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### Non-stably trivial bundle with trivial charactertic classes

nov 18 at 22:44 algori 16k12994

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### Sequence of graphs with small $\lambda_1$ (the smallest nonzero eigenvalue of a regular finite graph)

nov 11 11 at 23:17 Antoine 1,010111

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### Complemented Subspaces and Riesz-Thorin interpolation

aug 16 at 18:48 Antoine 1,010111

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### left- and right- Folner sets

sep 9 at 2:04 R W 3,3261512

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### How does a quasi-isometry affect Poisson or Martin boundaries?

sep 14 at 1:00 Misha 12.5k12648

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