On Whitehead's inequality, nil [X,G]≤cat X
A new proof of Whitehead's inequality, nil [X,G]≤cat X, is given.
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| Format: | Article |
| Language: | English |
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Hindawi Limited
2001-01-01
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| Series: | International Journal of Mathematics and Mathematical Sciences |
| Online Access: | http://dx.doi.org/10.1155/S0161171201004641 |