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researcher

U. Kraehmer

21 papers hereh-index 13433 citations28 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • sole author3
  • first author8
  • middle author2
  • last author8

Across the 21 of 21 papers where every author was matched, so the position is known.

fields
  • math.QA15
  • math.KT3
  • math.AT1
  • math.CT1
  • math.OA1

identity via Semantic Scholar / OpenAlex

activity
20012019
most citedPiecewise principal comodule algebras

17 citations · 56 across the 19 of their papers we have counts for

collaborators
Showing 2008Show all

2 papers · 1 filter

math.QA2008★ 4 cited

Duality and products in algebraic (co)homology theories

Niels Kowalzig, Ulrich Kraehmer

The origin and interplay of products and dualities in algebraic (co)homology theories is ascribed to a ×A​-Hopf algebra structure on the relevant universal enveloping algebr…

math.QA2008★ 8 cited

The Hochschild cohomology ring of the standard Podles quantum sphere

Ulrich Kraehmer

The cup and cap product in twisted Hochschild (co)homology is computed for the standard quantum 2-sphere and used to construct a cyclic 2-cocycle that represents the fundamental Ho…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.