Decomposition of topological Azumaya algebras
Canadian mathematical bulletin, Tome 65 (2022) no. 2, pp. 506-524

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Let $\mathscr {A}$ be a topological Azumaya algebra of degree $mn$ over a CW complex X. We give conditions for the positive integers m and n, and the space X so that $\mathscr {A}$ can be decomposed as the tensor product of topological Azumaya algebras of degrees m and n. Then we prove that if $m and the dimension of X is higher than $2m+1$, $\mathscr {A}$ may not have such decomposition.
DOI : 10.4153/S000843952100045X
Mots-clés : Topological Azumaya algebra, projective unitary group
Arcila-Maya, Niny. Decomposition of topological Azumaya algebras. Canadian mathematical bulletin, Tome 65 (2022) no. 2, pp. 506-524. doi: 10.4153/S000843952100045X
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     title = {Decomposition of topological {Azumaya} algebras},
     journal = {Canadian mathematical bulletin},
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     year = {2022},
     volume = {65},
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     doi = {10.4153/S000843952100045X},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S000843952100045X/}
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