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Iosif Pinelis's user avatar
Iosif Pinelis's user avatar
Iosif Pinelis's user avatar
Iosif Pinelis
  • Member for 11 years
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About

My main interests are in inequalities and extremal problems in probability theory.

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87
Does Pinelis' inequality (1994) exist?
Nov 3, 2020
36
$\mathbb{E}[X^4]=1$, $X,Y$ iid, what's the best upper bound of $\mathbb{E}[(X-Y)^4]$?
Apr 29, 2018
26
How can a mathematician handle the pressure to discover something new?
Mar 11, 2018
25
When are Fourier coefficients monotonic?
Dec 25, 2020
25
Is this differential identity known?
Jun 7, 2015
24
Conjecture: Given any five points, we can always draw a pair of non-intersecting circles whose diameter endpoints are four of those points
Nov 29, 2023
23
Conjecture: If circular coins of any sizes are in a convex polygonal frame, with each coin touching exactly one edge, then all the coins can move
Jan 11, 2023
23
Separating Gamma in two independent functions
Apr 15
22
"Insanely increasing" $C^\infty$ function with upper bound
Nov 26, 2018
22
Why doesn't mathematics collapse even though humans quite often make mistakes in their proofs?
Aug 18, 2019
Top Meta posts
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39
Deleting others' work
16
Best of MathOverflow, or papers inspired by MathOverflow
10
Rationale for reputation change on "my" reputation page that says 'User was removed'
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19
Conjecture: Given any five points, we can always draw a pair of non-intersecting circles whose diameter endpoints are four of those points.
14
Conjectured formula for the Fabius function
11
Does the following inequality hold true?
10
About nonnegative polynomials
8
creating delimiters and inequality signs