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Apr 6, 2010 at 21:30 history edited Ben Webster CC BY-SA 2.5
edited body; edited body
Jan 26, 2010 at 2:17 vote accept Zarathustra
Jan 25, 2010 at 17:25 comment added j.c. See Prop 1.33 of Hatcher's book.
Jan 25, 2010 at 3:08 comment added Zarathustra Thank you, I understand the obstruction now. In your second paragraph auto should be changed to homeo. I would appreciate if someone can provide a textbook reference for this statement.
Jan 25, 2010 at 2:55 history answered Ben Webster CC BY-SA 2.5