We need a formal standard definition of a topological sandwich. First attempt: A topological sandwich is a topological space S = B ∪ M ∪ B', such that: 1) Each of B, M, B' is homeomorphic to the unit ball, 2) Every path from a point of B to a point of B' intersects M.
-
-
If I understand this correctly, presandwiches are decomposable into disjoint sets, one which is minimally sandwich in every nhood and one which is only presandwich in every nhood?
-
A space P = B ∪ M ∪ B' is locally sandwich if: Every point p in P has an open neighborhood S_p, such that: S_p = (S_p ∩ B) ∪ (S_p ∩ M) ∪ (S_p ∩ B') is a (minimal) sandwich.
- 1 more reply
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.
. Banned in Sweden. SubGenius, Zhuangist, white-hat troll. Defrocked mathematician. Brain problems.