Today I've read interesting fact and actually have no idea to create a homomorphism between two objects.
Consider a twice retorted strip and side surface of cylinder. Then they are homeomorphic.
Any idea of bijection ?
Today I've read interesting fact and actually have no idea to create a homomorphism between two objects.
Consider a twice retorted strip and side surface of cylinder. Then they are homeomorphic.
Any idea of bijection ?
Unlike Mobius band which twist a half, the band in your question twist 360 degree. The homeomorphism is this: cut the band, twist the resulted strip 360 degree and paste the cut points again. This is possible since you paste the cut points in the original direction, a method which can't be done for Mobius band. This is a obvious question in topology eccept if you want to think of topology as rubber-sheet geometry!