can someone help me to solve these problems in details?? Consider A =(0,1)× R. Is A open w.r.t. the topology induced by the French railway metric in R2? how about B=(-1,1)× R???
Last edited by cummings123321; Jan 29th 2013 at 01:25 PM.
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Is the the French railway metric defined as follows: ? Do you know how open balls under this metric look like?
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