in MO editors' lounge, 1 min ago, by Martin Sleziak
Perhaps somebody knowledgeable in algebraic topology could check whether this edit changing "(S^2) v (S^3)" to "$S^2\times S^3$" at the end of the first paragraph was correct or whether it changed meaning of the post. The relevant part now reads: "to the $4$-skeleton of $S^2\times S^3$, which is $S^2\times S^3$".