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Shimrod

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abstract-algebra

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17 votes cast

Questions (17)

Votes Activity Newest

6	Does every subgroup of finite index contain a power of each element of the group?
5	Lagrange's Theorem and Quadratic Character of $-2$
3	Units in a quotient of a quadratic number ring
3	Is the Riemann zeta function surjective? [closed]
2	Subgroups of $\operatorname{GL}_2(\mathbb Z/8\mathbb Z)$

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Answer (1)

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2	To prove: $n!=\sum\limits_{r=0}^n (-1)^r \binom{n}{r} (n-r)^n$

Tags (30)

2 abstract-algebra × 2	0 complex-analysis × 5
2 combinatorics	0 algebraic-number-theory × 3
2 linear-algebra	0 field-theory × 3
2 permutations	0 commutative-algebra × 3
0 number-theory × 8	0 elliptic-curves × 2

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13	Cube root of discriminant of elliptic curve

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Votes cast (17)

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12	up		2	question
5	down		15	answer

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