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Feb 27, 2015 at 14:32 vote accept ali elgindi
Feb 23, 2015 at 14:00 answer added Allen Hatcher timeline score: 2
Feb 23, 2015 at 5:46 comment added ali elgindi I appreciate any help. If I can give bounty I would!
Feb 23, 2015 at 5:45 comment added ali elgindi How can I answer this question? In particular for $M=Gr(3,6)$ real Grassmannian.
Feb 23, 2015 at 5:41 comment added ali elgindi Yes exactly: homotopies that fix the restriction to the boundary $S^2$.
Feb 23, 2015 at 2:10 comment added Daniele Zuddas Do you consider homotopies that fix the restriction to $S^2$ as well?
Feb 22, 2015 at 16:47 history edited ali elgindi CC BY-SA 3.0
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Feb 22, 2015 at 15:25 history asked ali elgindi CC BY-SA 3.0