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Sambo
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Pure Math Major/Comp Sci Minor Undergrad. Tau > Pi ;)

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21
If set theory only contains the notions of “set” and “is a member of” as primitives, how can an axiom of set theory refer to a “formula”?
Feb 11
17
How can a gradient be thought of as a function?
Nov 9, 2018
13
Approximate $(0.99)^{300}$ without calculator
Nov 6, 2018
12
Are abelian subgroups normal?
Oct 23, 2017
10
Is $f:\emptyset \to X$ injective
Aug 5, 2017
10
Why and How do certain manipulations in indefinite integrals "just work"?
Aug 10, 2021
9
Proof by Contradiction: "Bad Form" or "Finest Weapon"? Reconciling Perspectives
Jul 7
9
Proof of the inequality $||a+b|^p - |a|^p| \leq \epsilon |a|^p + C_{\epsilon} |b|^p$
Jul 16, 2018
9
Intuition about weakly differentiable functions
Jun 3, 2018
8
Any two sets of continuum cardinality are equinumerous?
Aug 29, 2022
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What if askers don't know what they don't know?
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Is the coproduct $N=1+N$ universal?
7
Rangers making attacks with different melee weapons?
6
How to keep your hands clean while using a blackboard?
5
Windows alphabetical file sorting: why do spaces have special treatment?