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First to answer and accepted with score of 10 or more. This badge can be awarded multiple times.

earned this badge 27 times.
A strange condition of convexity?
Awarded Jan 26 at 17:06
When can a sum be re-signed to converge to any limit?
Awarded Jan 16 at 10:36
$C^k$ version of Hadamard's Lemma. Differentiability of the remainder
Awarded Nov 15, 2023 at 12:35
A Poincaré-like inequality
Awarded Nov 7, 2023 at 12:36
Is this property equivalent to Lusin's property (N) for continuous functions?
Awarded Jun 20, 2023 at 20:17
On an asymptotic integral decay
Awarded May 2, 2023 at 17:16
Converse of closed graph theorem
Awarded Nov 15, 2022 at 18:16
Bounded real analytic function with bounded derivative and its higher order derivatives
Awarded Apr 20, 2022 at 17:34
Is this closed-form summation a special case of known Lerch zeta function formulas?
Awarded Jan 28, 2022 at 15:25
Estimating the growth of the Taylor coefficients given the growth of the function at the boundary
Awarded Nov 25, 2021 at 15:15
Is it true that $\lVert A\rVert \leq \lVert A^2\rVert$ for $A\in \operatorname{SL}(2, \mathbb{R})$ when $\operatorname{trace}(A)>2$?
Awarded Oct 27, 2021 at 16:15
Can we characterize a periodic function by the compactness of the set of its translates?
Awarded Sep 22, 2020 at 13:55
Fourier series of $\log(a +b\cos(x))$?
Awarded May 15, 2020 at 18:26
A set whose Hausdorff dimension gradually changes?
Awarded Jan 19, 2020 at 18:15
Locus of roots of all convex combinations of two monic polynomials
Awarded Jan 31, 2018 at 19:46
Direct combinatorial proof that $2^{2k} = \sum \binom{2i}{i}\binom{2j}{j}$?
Awarded Nov 13, 2017 at 10:31
An elementary question about a sequence of numbers
Awarded Sep 28, 2017 at 1:01
Finding the nearest matrix with real eigenvalues
Awarded Jul 6, 2017 at 11:13
The spectral radius of a binary matrix
Awarded Apr 25, 2017 at 13:47
How do i solve this : $\displaystyle \ f'=e^{{f}^{-1}}$?
Awarded Jan 2, 2017 at 19:24
are these polynomials or rationals functions?
Awarded Nov 21, 2016 at 3:18
$\int\limits_{\Omega}{uvdx}<\infty,\forall v\in H_0^1(\Omega)$ implies $u\in L^{6/5}(\Omega)$
Awarded Jun 25, 2016 at 13:43
Determinant of a $k \times k$ block matrix
Awarded Mar 9, 2016 at 13:35
Limit of distance between two random points in a unit-radius $n$-sphere
Awarded Aug 9, 2015 at 0:09
Connected components $0-1$ matrices
Awarded Feb 25, 2015 at 13:08
How do we show this matrix has full rank?
Awarded Jan 4, 2015 at 17:25
Pathological product space norm
Awarded Nov 9, 2014 at 16:16

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