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## Homework Statement

verify that R, the reals, quotiented by the equivalence relation x~x+1 is S^1

## Homework Equations

## The Attempt at a Solution

All i can think of is to draw a unit square and identify sides like the torus, but this would be using IxI, a subset of R^2, and gives a cylinder at best... Obviously I am missing the point, so any help would be great.