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Jan
22
awarded  Nice Question
Jun
14
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Dec
22
asked Non-Universal Delta Functors
Sep
30
awarded  Explainer
Jun
14
awarded  Yearling
Nov
12
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Nov
6
awarded  Popular Question
Oct
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Jun
14
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Jan
13
revised Does there exist a differentiable function $\Bbb R^2$ to $\Bbb R$ with certain partial derivative properties?
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Jan
13
answered Does there exist a differentiable function $\Bbb R^2$ to $\Bbb R$ with certain partial derivative properties?
Sep
5
revised Functional equation of elliptic function with exactly two poles of order one
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Sep
5
answered Functional equation of elliptic function with exactly two poles of order one
Aug
19
answered Writing down an explicit homotopy
Aug
16
awarded  Critic
Aug
16
comment $f'+\lambda f$ acts as $f'$ without integral
@FrankScience ams.org/journals/proc/1976-060-01/S0002-9939-1976-0417350-1/… seems to prove that an arbitrary sum of a Darboux and continuous function can fail IVP pretty bad.
Aug
16
comment $f'+\lambda f$ acts as $f'$ without integral
@AndréNicolas That's not true, every function on the reals is the sum of two with IVP (c.f. the Wiki page for Darboux's Theorem).
Jul
20
answered Proving a number with $3^n$ equal digits is divisible by $3^n$
Jul
14
answered Why is the inradius of any triangle at most half its circumradius?
Jun
14
awarded  Yearling