Define an equivalence relation in , by declaring if and only if . Describe the quotient space and show that it is not a Hausdorff space.
My solution:
Let be the projection map. The equivalence class of , where , is since .
If then . Then the equivalence class of , where , is .
Thus the set is the union of and for all .
Can someone help me show that this space is not a Hausdorff space? Thanks