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182:{\displaystyle (B^{n},S^{n-1})\to (B^{n},S^{n-1})}
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312:{\displaystyle f=id-C}
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344:identity map
191:Banach space
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455:2022-04-19
385:References
375:Jean Leray
26:base point
451:: 195–228
426:0012-9593
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