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Homotopy types of gauge groups of $$\mathrm {PU}(p)$$ PU ( p ) -bundles over spheres
Journal of Homotopy and Related Structures ( IF 0.5 ) Pub Date : 2021-01-21 , DOI: 10.1007/s40062-020-00274-0
Simon Rea

We examine the relation between the gauge groups of \(\mathrm {SU}(n)\)- and \(\mathrm {PU}(n)\)-bundles over \(S^{2i}\), with \(2\le i\le n\), particularly when n is a prime. As special cases, for \(\mathrm {PU}(5)\)-bundles over \(S^4\), we show that there is a rational or p-local equivalence \(\mathcal {G}_{2,k}\simeq _{(p)}\mathcal {G}_{2,l}\) for any prime p if, and only if, \((120,k)=(120,l)\), while for \(\mathrm {PU}(3)\)-bundles over \(S^6\) there is an integral equivalence \(\mathcal {G}_{3,k}\simeq \mathcal {G}_{3,l}\) if, and only if, \((120,k)=(120,l)\).



中文翻译:

$$ \ mathrm {PU}(p)$$ PU(p)-球面上的束的量表组的同伦类型

我们检查\(\ mathrm {SU}(n)\) -和\(\ mathrm {PU}(n)\) -在\(S ^ {2i} \)上的束的量规组之间的关系,其中\ (2 \ le i \ le n \),特别是当n是素数时。作为特殊情况,对于\(\ mathrm {PU}(5)\) -在\(S ^ 4 \)上的束,我们表明存在有理或p-局部等价\(\ mathcal {G} _ {2 ,k} \ simeq _ {(p)} \数学{G} _ {2,l} \)对于任何素数p,且仅当\((120,k)=(120,l)\)时,而对于\(\ mathrm {PU}(3)\) -在\(S ^ 6 \)上的捆绑,有一个积分等价\(\ mathcal {G} _ {3,k} \ simeq \ mathcal {G} _ {3,l} \)当且仅当\((120,k)=(120,l)\)

更新日期:2021-01-21
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