User R.P.

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distinguishing E(K)/E_0(K) groups of order 4

answered Apr 3, 2017 at 15:59

8 votes

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Reference request: Diophantine equations

answered Aug 18, 2020 at 10:24

7 votes

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Square root in number field

answered Jun 30, 2022 at 18:19

7 votes

Set of primes $p$ such that $\mathrm{Hom}(A, \mathbb{F}_p)=\emptyset$

answered May 10, 2021 at 18:17

7 votes

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Is co-restriction in Galois cohomology in fact the norm map via Kummer isomorphism?

answered Mar 14, 2017 at 23:28

7 votes

Elementary proof of Riemann-Roch for compact Riemann surfaces

answered Oct 26, 2016 at 1:40

7 votes

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Which quartic fields contain the 4th roots of unity in their Galois closure?

answered Oct 26, 2016 at 22:21

7 votes

Demystifying complex numbers

answered Aug 28, 2016 at 12:47

7 votes

How can we solve the following number theory problem?

answered Apr 18, 2023 at 8:15

6 votes

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Reference request to proof that H$^2(\Gamma, \mathbb{Q}/\mathbb{Z}) = 0$

answered Aug 30, 2016 at 10:52

6 votes

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Quadratic twist of an elliptic curve given by non-Weierstrass model

answered Apr 12, 2014 at 13:07

6 votes

Rational solutions to x^3 + y^3 + z^3 - 3xyz = 1

answered Aug 10, 2012 at 1:07

6 votes

Non-rigorous reasoning in rigorous mathematics

answered Mar 23, 2017 at 19:21

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Does the expression $x^4 +y^4$ take on all values in $\mathbb{Z}/p\mathbb{Z}$?

answered Apr 1, 2020 at 17:23

6 votes

Two queries on triangles, the sides of which have rational lengths

answered Jul 4, 2019 at 16:07

6 votes

Conic sections are to cones as quadric surfaces are to what?

answered Jun 15, 2020 at 19:19

5 votes

Singular models of K3 surfaces

answered Apr 15, 2020 at 9:50

5 votes

Possible $p$-torsion subgroup of $E(\mathbb{Q}_p)$, and if there is a theorem to say which case happens when?

answered Dec 19, 2019 at 14:52

5 votes

Sine and Archimedes' derivation of the area of the circle

answered Apr 3, 2017 at 20:14

5 votes

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Is there an english translation of Delignes "La conjecture de Weil pour les surfaces K3."?

answered May 27, 2014 at 15:58

5 votes

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First Galois cohomology of Weil restriction of $\mathbb{G}_m$

answered Feb 2, 2016 at 22:53

4 votes

Pythagorean number in Artin's theorem on nonnegative rational fractions

answered Feb 5, 2016 at 20:44

4 votes

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Find the rational cases where ${t}^{2} - 4$ is a perfect square with height bound $|t| \le N$ for positive integer $N \ge 1$

answered Jan 27, 2016 at 0:45

4 votes

On the fixed point of automorphism of $\mathbb F_3[[T]]$

answered Dec 16, 2013 at 0:30

4 votes

Analogy between the nodal cubic curve $y^2=x^3+x^2$ and the ring $\mathbb{Z}[\sqrt{-3}]$?

answered Feb 15, 2014 at 22:00

4 votes

Tweetable Mathematics

answered Apr 26, 2017 at 12:59

4 votes

A curve is proper iff the space of global sections is finite-dimensional

answered May 2, 2019 at 13:53

4 votes

Inequality with symmetric polynomials

answered Feb 20, 2017 at 19:16

4 votes

How to work with this power series?

answered Oct 12, 2016 at 16:22

3 votes

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What is the state-of-the-art for solving polynomials systems over fields that are not algebraically closed?

answered May 28, 2020 at 20:43

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81 Answers

distinguishing E(K)/E_0(K) groups of order 4

Reference request: Diophantine equations

Square root in number field

Set of primes $p$ such that $\mathrm{Hom}(A, \mathbb{F}_p)=\emptyset$

Is co-restriction in Galois cohomology in fact the norm map via Kummer isomorphism?

Elementary proof of Riemann-Roch for compact Riemann surfaces

Which quartic fields contain the 4th roots of unity in their Galois closure?

Demystifying complex numbers

How can we solve the following number theory problem?

Reference request to proof that H$^2(\Gamma, \mathbb{Q}/\mathbb{Z}) = 0$

Quadratic twist of an elliptic curve given by non-Weierstrass model

Rational solutions to x^3 + y^3 + z^3 - 3xyz = 1

Non-rigorous reasoning in rigorous mathematics

Does the expression $x^4 +y^4$ take on all values in $\mathbb{Z}/p\mathbb{Z}$?

Two queries on triangles, the sides of which have rational lengths

Conic sections are to cones as quadric surfaces are to what?

Singular models of K3 surfaces

Possible $p$-torsion subgroup of $E(\mathbb{Q}_p)$, and if there is a theorem to say which case happens when?

Sine and Archimedes' derivation of the area of the circle

Is there an english translation of Delignes "La conjecture de Weil pour les surfaces K3."?

First Galois cohomology of Weil restriction of $\mathbb{G}_m$

Pythagorean number in Artin's theorem on nonnegative rational fractions

Find the rational cases where ${t}^{2} - 4$ is a perfect square with height bound $|t| \le N$ for positive integer $N \ge 1$

On the fixed point of automorphism of $\mathbb F_3[[T]]$

Analogy between the nodal cubic curve $y^2=x^3+x^2$ and the ring $\mathbb{Z}[\sqrt{-3}]$?

Tweetable Mathematics

A curve is proper iff the space of global sections is finite-dimensional

Inequality with symmetric polynomials

How to work with this power series?

What is the state-of-the-art for solving polynomials systems over fields that are not algebraically closed?