$(X,\mathcal T)$ and $(Y,\mathcal S)$ are topological spaces. $X$ can be embedded homeomorphically in $Y$ and $Y$ can be imbedded homeomorphically in $X$.
Are $X$ and $Y$ homeomorphic?
How about uniform spaces?
$(X,\mathcal T)$ and $(Y,\mathcal S)$ are topological spaces. $X$ can be embedded homeomorphically in $Y$ and $Y$ can be imbedded homeomorphically in $X$.
Are $X$ and $Y$ homeomorphic?
How about uniform spaces?
Not in general. The Cantor set minus any one point and the Cantor set itself are a counterexample, as are $[0,1]$ and $(0,1)$ and many others.