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MathManiac
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12 votes
1 answer
287 views

Is every square matrix a sum of a diagonal matrix and a nilpotent matrix

6 votes
1 answer
614 views

Isomorphism between quotient rings over finite fields

6 votes
2 answers
386 views

Can the product of 4 distinct numbers be equal to a fourth power?

6 votes
2 answers
951 views

Condition for equality of mixed derivatives

6 votes
1 answer
501 views

Topology on the set of ordinal numbers

6 votes
1 answer
470 views

Eigenvalues of Hecke operators are algebraic integers

5 votes
1 answer
3k views

Lower limit topology is normal

4 votes
1 answer
175 views

Binomial coefficients identity [duplicate]

4 votes
2 answers
199 views

Number theory divisibility problem

4 votes
0 answers
395 views

Software for computing generators of the invariant rings of the symmetric groups

3 votes
1 answer
2k views

Transitive subgroup of symmetric group $S_n$ containing an $(n-1)$-cycle and a transposition

3 votes
1 answer
444 views

Density of sin(k) where k is an integer [duplicate]

3 votes
1 answer
971 views

Galois group for the algebraic closure of a finite field

3 votes
1 answer
906 views

Bound on derivative of a holomorphic function

3 votes
1 answer
62 views

Bounds on dimensions of fixed subspaces of a representation, implies that there exists a non-zero fixed element.

2 votes
0 answers
43 views

Matrix similar to a permutation matrix over $Z$

2 votes
0 answers
40 views

Closed form expression for Taylor-like series in 2 variables in positive characteristic

2 votes
4 answers
702 views

Boundary of a bounded open set in $\mathbb{R}^2$

2 votes
1 answer
474 views

Cyclic extension without primitive root of unity

2 votes
1 answer
4k views

Ring of integers of a cyclotomic number field

2 votes
1 answer
186 views

Legendre symbol series

2 votes
4 answers
1k views

Evaluation of the improper integral $\int_{0}^{\infty}\frac{\cos6t-\cos4t}{t}\text{d}t$

2 votes
1 answer
292 views

Sums involving binomial coefficients in a finite field

2 votes
2 answers
365 views

Character of an $\mathbb{R}G$-module constructed from a $\mathbb{CG}$-module

2 votes
0 answers
307 views

Stein and Shakarchi Fourier Analysis Chapter 4 Exercise 20

1 vote
1 answer
62 views

Calculation of coefficient of a monomial in a polynomials

1 vote
2 answers
118 views

Non identity character of an Abelian group

1 vote
1 answer
480 views

Inverse of the $\Delta$ function has integer Fourier coefficients

1 vote
2 answers
225 views

Isomorphism between quotient rings

1 vote
0 answers
317 views

Number of generators of an ideal of the polynomial ring over a field