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Answer score of 25 or more. This badge can be awarded multiple times.

earned this badge 78 times.
Motivation and physical interpretation of the Laplace transform
Awarded Mar 13 at 21:52
Fourier's proof of reality of all roots of Bessel function $J_0(x)$
Awarded Nov 1, 2023 at 0:48
A holomorphic function sending integers (and only integers) to $\{0,1,2,3\}$
Awarded Apr 17, 2023 at 18:27
Algebraic geometry over the complex numbers, and beyond
Awarded Aug 13, 2022 at 20:11
Theorems with many distinct proofs
Awarded Jun 20, 2022 at 6:25
Publishing papers that became classics before they were submitted
Awarded Jun 5, 2022 at 21:05
Publishing papers that became classics before they were submitted
Awarded Jun 5, 2022 at 21:05
Is spherical trigonometry a dead research area?
Awarded May 16, 2022 at 0:27
Is amateur research in mathematics viable?
Awarded May 11, 2022 at 16:09
Which theorems have Pythagoras' Theorem as a special case?
Awarded May 9, 2022 at 19:17
Are entire functions “essentially” determined by their maximum modulus function?
Awarded Apr 29, 2022 at 3:51
Is St. Petersburg a good place for the 2022 Int. Congress of Mathematicians
Awarded Feb 26, 2022 at 4:11
Applications of complex exponential
Awarded Jan 17, 2022 at 13:05
How would a topologist explain "every Riemann surface of genus $g$ is hyperelliptic if and only if $g=2$"?
Awarded Aug 30, 2021 at 17:57
Solutions-set first order ODE's without uniqueness
Awarded Aug 6, 2021 at 22:45
Conjectures or Results?
Awarded Jun 24, 2021 at 7:19
Need advice or assistance for son who is in prison. His interest is scattering theory
Awarded Jan 25, 2021 at 22:06
Mathematical Paper That Just Links Two Different Fields of Sciences
Awarded Jan 24, 2021 at 14:55
An "analytic continuation" of power series coefficients
Awarded Jan 13, 2021 at 11:50
A sudden smiley? :-)
Awarded Jan 13, 2021 at 6:41
Entire function bounded at every line
Awarded Nov 26, 2020 at 18:16
When can an invertible function be inverted in closed form?
Awarded Oct 19, 2020 at 21:12
Counterexamples against all odds
Awarded Aug 9, 2020 at 7:34
Access to journals during pandemic
Awarded Jul 15, 2020 at 19:47
The origin(s) of the word "elliptic"
Awarded May 10, 2020 at 22:25
Nontrivially fillable gaps in published proofs of major theorems
Awarded Feb 9, 2020 at 14:45
How did Riemann prove that the moduli space of compact Riemann surfaces of genus $g>1$ has dimension $3g-3$?
Awarded Dec 24, 2019 at 0:25
Any real contribution of functional analysis to quantum theory as a branch of physics?
Awarded Dec 17, 2019 at 21:05
What are examples of (collections of) papers which "close" a field?
Awarded Dec 4, 2019 at 15:05
What are examples of books which teach the practice of mathematics?
Awarded Nov 22, 2019 at 23:25
The work of mathematicians outside their professional environment
Awarded Sep 29, 2019 at 22:10
How are constants/functions named after their discoverer?
Awarded Sep 6, 2019 at 17:35
What "real life" problems can be solved using billiards?
Awarded Aug 12, 2019 at 14:35
When is one 'ready' to make original contributions to mathematics?
Awarded Jul 5, 2019 at 13:55
Examples of major theorems with very hard proofs that have not dramatically improved over time
Awarded Apr 6, 2019 at 17:55
13 months and not even one report. what would you do?
Awarded Mar 3, 2019 at 23:10
Good "casual" advanced math books
Awarded Feb 12, 2019 at 16:15
What definitions were crucial to further understanding?
Awarded Dec 5, 2018 at 8:25
How many mathematicians are there?
Awarded Jul 17, 2018 at 2:04
Explaining the main ideas of proof before giving details
Awarded Jun 21, 2018 at 22:15
Is the Riemann zeta function surjective?
Awarded May 18, 2018 at 16:04
Diplomacy when reporting errors
Awarded May 4, 2018 at 15:48
Do you know important theorems that remain unknown?
Awarded Mar 30, 2018 at 0:39
Is it always possible to calculate the limit of an elementary function?
Awarded Mar 23, 2018 at 11:09
All polynomials are the sum of three others, each of which has only real roots
Awarded Mar 12, 2018 at 14:45
How can a mathematician handle the pressure to discover something new?
Awarded Mar 12, 2018 at 8:59
What is "Teichmüller Theory" and its history?
Awarded Feb 4, 2018 at 1:11
Mathematical conjectures on which applications depend
Awarded Jan 19, 2018 at 17:04
Publishing mathematical coincidences
Awarded Nov 7, 2017 at 18:16
What are reasons to believe that e is not a period?
Awarded Sep 30, 2017 at 7:42
Who first proved ergodicity of irrational rotations of the circle?
Awarded May 17, 2017 at 17:03
Requesting a referee's report on my paper from a math journal
Awarded May 16, 2017 at 19:58
Solve $f(x)=\int_{x-1}^{x+1} f(t) \mathrm{d}t$
Awarded May 9, 2017 at 9:09
Citing exercises in an article
Awarded May 4, 2017 at 0:45
Is every rational realized as the Euler characteristic of some manifold or orbifold?
Awarded Apr 18, 2017 at 19:37
Where to publish a new proof of an old theorem?
Awarded Feb 17, 2017 at 3:02
Not especially famous, long-open problems which anyone can understand
Awarded Nov 3, 2016 at 20:57
Where can square roots come from when they are not distances?
Awarded Jul 10, 2016 at 21:52
Publishing a bad paper?
Awarded Jul 4, 2016 at 3:03
Is it possible to have a research career while checking the proof of every theorem that you cite?
Awarded May 5, 2016 at 23:42
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