Are there two compact convex subsets $X,Y$ of the Euclidean space with the following property?
They are not homeomorphic spaces but $X$ can be embedded in $Y$ and $Y $ can be embedded in $X$?
Are there two compact convex subsets $X,Y$ of the Euclidean space with the following property?
They are not homeomorphic spaces but $X$ can be embedded in $Y$ and $Y $ can be embedded in $X$?