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Journal für die reine und angewandte Mathematik

Managing Editor: Weissauer, Rainer

Ed. by Colding, Tobias / Huybrechts, Daniel / Hwang, Jun-Muk / Williamson, Geordie


IMPACT FACTOR 2018: 1.859

CiteScore 2018: 1.14

SCImago Journal Rank (SJR) 2018: 2.554
Source Normalized Impact per Paper (SNIP) 2018: 1.411

Mathematical Citation Quotient (MCQ) 2018: 1.55

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1435-5345
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Volume 2014, Issue 691

Issues

Weakly complex homogeneous spaces

Andrei Moroianu / Uwe Semmelmann
  • Institut für Geometrie und Topologie, Fachbereich Mathematik, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
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Published Online: 2012-09-08 | DOI: https://doi.org/10.1515/crelle-2012-0077

Abstract.

We complete our recent classification (2011) of compact inner symmetric spaces with weakly complex tangent bundle by filling up a case which was left open, and extend this classification to the larger category of compact homogeneous spaces with positive Euler characteristic. We show that a simply connected compact equal rank homogeneous space has weakly complex tangent bundle if and only if it is a product of compact equal rank homogeneous spaces which either carry an invariant almost complex structure (and are classified by Hermann (1955)), or have stably trivial tangent bundle (and are classified by Singhof and Wemmer (1986)), or belong to an explicit list of weakly complex spaces which have neither stably trivial tangent bundle, nor carry invariant almost complex structures.

About the article

Received: 2012-03-04

Published Online: 2012-09-08

Published in Print: 2014-06-01


Funding Source: Mathematisches Forschungsinstitut Oberwolfach

Award identifier / Grant number: “Research in Pairs”


Citation Information: Journal für die reine und angewandte Mathematik (Crelles Journal), Volume 2014, Issue 691, Pages 229–244, ISSN (Online) 1435-5345, ISSN (Print) 0075-4102, DOI: https://doi.org/10.1515/crelle-2012-0077.

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[1]
Andrei Moroianu, Mihaela Pilca, and Uwe Semmelmann
Mathematische Annalen, 2013, Volume 357, Number 4, Page 1205

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