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A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

169,291 papers · 148 categories

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0111 · Feb 201419922001200920182026
2 results for “quasihomomorphisms”
Low-dimensional bounded cohomology and extensions of groupsmath.GR

This paper extends group cohomology to bounded cohomology using quasihomomorphisms.

problem Explicitly computing bounded cohomology is hard, especially for groups.
method Interpreting bounded cohomology in terms of group extensions using quasihomomorphisms.
result Makes the interpretation of bounded cohomology in terms of group extensions available.
bounded cohomologygroup extensionsquasihomomorphismsgeometric group theory
2017-03-26abs ↗pdf ↗
Concordance group and stable commutator length in braid groupsmath.GT

We define a quasihomomorphism from braid groups to the concordance group of knots and examine its properties and consequences of its existence. In particular, we provide a relation between the stable four ball genus in the concordance group and the stable commutator length in braid groups, and produce examples of infin…

2014-02-13abs ↗pdf ↗