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How on earth can an infinite dimensional sphere be able to agree to a contract, how would it even sign it?
Explanation?
On what level? A proof? Or just the meaning of the words?
What is contractible in mathematics? Wikipedia had article on contractible spaces but that was way beyond be.
https://en.wikipedia.org/wiki/Contractibility_of_unit_sphere_in_Hilbert_space
I can offer no ELI5 but here’s the context
How much do you need to contract an infinite sphere before it becomes finite?
Until it becomes a point.
There is no sphere but s p h e r e itself.
