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Citation bot (talk | contribs) Alter: doi-broken-date. Add: url. | Use this bot. Report bugs. | Suggested by AManWithNoPlan | Category:CS1 maint: DOI inactive as of January 2021 | #UCB_Category 240/2337 |
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| issue = 2 | pages = 304–307
| doi = 10.1090/S0002-9904-1974-13475-0
| url = http://projecteuclid.org/euclid.bams/1183535407 }}
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that for ordinary (commutative) manifolds, the connected component of the identity in <math>Diff(\mathcal{M})</math> is always a simple group, therefore no ordinary manifold can have this semi-direct product structure.
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* {{cite journal |arxiv=hep-th/0610241 |doi=10.4310/ATMP.2007.v11.n6.a3 |title=Gravity and the standard model with neutrino mixing |year=2007 |last1=Chamseddine |first1=Ali H. |last2=Connes |first2=Alain |last3=Marcolli |first3=Matilde |journal=Advances in Theoretical and Mathematical Physics |volume=11 |issue=6 |pages=991–1089 |s2cid=9042911}}
* {{cite journal |arxiv=0705.0489 |last1=Jureit |first1=Jan-H. |last2=Krajewski |first2=Thomas |last3=Schucker |first3=Thomas |last4=Stephan |first4=Christoph A. |title=On the noncommutative standard model |journal=Acta Phys. Polon. B |year=2007 |volume=38 |issue=10 |pages=3181–3202 |bibcode=2007AcPPB..38.3181J}}
* {{cite journal |doi=10.1007/978-3-540-31532-2_6 | doi-broken-date=31 May 2021
==External links==
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