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The wedge sum of two circles has fixed point property?

I'm trying to find a continuous map from the wedge sum to itself, that this property fails, I couldn't find it, I need help.

Thanks

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1 Answer 1

up vote 6 down vote accepted

If by circle you mean $S^1$, and the fixed point property is the claim that every continuous map into itself has a fixed point, for two circles like so: enter image description here

consider the map that rotates $A$ by 90 degrees, and sends all of $B$ to the image of $x$.

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can you give more details please? thank you for your answer :) –  user42912 Nov 25 '12 at 12:07
    
if you rotate $A$ by 90 degrees, and send all of $B$ to the image of $x$, this is (i) a continuous map from the wedge of two circles to itself and (ii) sends no point to itself, i.e. has no fixed points –  uncookedfalcon Nov 25 '12 at 22:38
    
can I make a map, that rotate $90^o$ both circles as you do in the circle A? I think this map is well-defined and doesn't have fixed points. –  user42912 Nov 29 '12 at 3:46
    
Er it's not well defined: the point $x$ would be sent two different places. –  uncookedfalcon Nov 29 '12 at 18:55
    
yes, you're reason –  user42912 Nov 29 '12 at 21:42

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