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Poitou-Tate
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16
Cannot become ring because distribution law does not hold
Mar 21, 2022
8
If $K/F$ is a Galois extension and $[E:F]=2$, where $F\subset E\subset K$, is it true that $E/F$ is a Galois extension?
May 8, 2022
7
Why Jacobson radical is 'radical'?
Dec 1, 2020
6
number of rational points of hyper elliptic curve $y^5=-x^2+x$ over $\Bbb{F}_{121}$
Mar 10, 2023
6
Kernel of restriction and cokernel of corestriction of group cohomology
Apr 17
6
Does there exists a quadratic extension $L$ of $K$, in which $p_1,p_2,\ldots,p_n$ ramifies in $L/K$?
Nov 21, 2023
5
Group law of elliptic curve under transformation
Mar 10, 2021
5
Solution of $p＝x^2＋y^2$ in $\Bbb Z$ and $\Bbb Q$ and class field theory
Sep 28, 2021
5
The splitting field of polynomial over $Z/2Z$
Jan 28, 2021
5
$\lim_{n \to \infty} x_n = 0$ and $\lim_{n \to \infty} f(x_n) = a$
Jul 3, 2020
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18
Discrepancy in Magma's calculation and Sage's of elliptic curve?
9
Is there a known elliptic curve, $E/\Bbb{Q}$, such that the rank of $E_D/\Bbb{Q}$ is bounded by some constant $M$, for all integers $D \in \Bbb{Z}$?
7
Mistake in Silverman's book in proof of Neron-Ogg-Shafarevich criterion?
7
Cubic twist of elliptic curves and its rank
6
Tate–Shafarevich group of Jacobian of Selmer curve $3X^3 + 4Y^3 + 5Z^3 = 0$