If I were studying this, I would be looking at domain theory, in which (among other things) there has been found a topological space X homeomorphic with XX. The page I linked links to some notes at the bottom. (h/t Qiaochu for pointing out domain theory)
If I were studying this, I would be looking at domain theory, in which (among other things) there has been found a topological space X homeomorphic with XX. The page I linked links to some notes at the bottom. (h/t Qiaochu for pointing out domain theory)