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Feb 21, 2010 at 21:56 history edited Torcuato Battaglia CC BY-SA 2.5
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Feb 21, 2010 at 18:35 comment added Jason DeVito - on hiatus Welcome to Mathoverflow, Torcuato. The fact about Pontryagin numbers follows immediately from the fact that $p_1(\mathbb{H}P^n)$ is nontrivial for $n\neq 1$, so I should have picked up on this myself following my comment to Ryan's answer - thanks for pointing it out!
Feb 21, 2010 at 8:16 history edited Torcuato Battaglia CC BY-SA 2.5
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Feb 21, 2010 at 8:08 history edited Torcuato Battaglia CC BY-SA 2.5
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Feb 21, 2010 at 4:50 history answered Torcuato Battaglia CC BY-SA 2.5