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.
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Replying to @St_Rev
What about deli meat on a sliced roll that has been almost, but not completely, cut in half (remaining "bread hinge" at one edge)?
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Replying to @as_per_ushe
That's equivalent to a hot dog, which has already been discussed.
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Replying to @St_Rev @as_per_ushe
St. Rev ☯️ 🏴 😻 Retweeted St. Rev ☯️ 🏴 😻
St. Rev ☯️ 🏴 😻 added,
9:14 AM - 24 Nov 2017
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. Banned in Sweden. SubGenius, Zhuangist, white-hat troll. Defrocked mathematician. Brain problems.