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Daron
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54
Non-associative operations
Aug 23, 2018
37
Any three sets have empty intersection -- how many sets can there be?
Dec 31, 2024
36
Is $(k \cdot f)(x) := f(kx)$ the scalar multiplication of some vector space?
Feb 20, 2025
28
Can a countable dense subset be split into two disjoint dense subsets?
Apr 15, 2018
19
How "messy" can a multivariable function be?
Apr 4, 2017
17
What are the higher derivatives of a multivariate function?
Sep 6, 2013
16
Continuous functions define a topology?
Jan 17, 2017
16
Second derivative positive $\implies$ convex
Oct 3, 2013
15
Can we get un-obvious results by defining sophisticated topologies?
Sep 4, 2013
14
Quotient of a monoid by equivalence relation
Jul 21, 2017

Top network posts

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156
Why are potions always brewed in extreme bulk?
123
How does a species who cannot distinguish left from right build their cities?
109
Why would a matriarchal society practice polygyny?
97
A single word synonym for "A person not to mess with"
86
How can I give Henry Ford's customers what they want: a faster horse?