User Thomas

7 votes

3 answers

711 views

Why is the one quadratic polynomial a perfect square more often than the other?

asked Apr 5, 2020 at 22:50

3 votes

1 answer

805 views

How to derive the Euler Lagrange equation for geodesics?

asked Feb 17, 2019 at 17:38

3 votes

1 answer

97 views

How to prove concavity of $\textrm{Tr}(\exp(H+\log X))$?

asked May 16, 2019 at 5:26

3 votes

2 answers

98 views

Cubes differences and primality

asked Jan 16, 2015 at 2:23

2 votes

0 answers

46 views

What is the general way to rewrite an ODE with respect to a change in coordinates?

asked Jan 21, 2015 at 8:57

2 votes

1 answer

78 views

Which of those courses can get me to Theoretical Physics? [closed]

asked Jul 15, 2017 at 17:16

2 votes

1 answer

35 views

What is wrong in my reasoning on field extensions?

asked Jan 7, 2018 at 6:48

2 votes

1 answer

156 views

Surjective function from D2 to s1?

asked Jun 13, 2018 at 4:24

2 votes

0 answers

50 views

What is the genus of $y=x^n$?

asked Oct 18, 2018 at 19:05

2 votes

4 answers

65 views

how do we prove $p|q\cdot r \rightarrow p=q$ or $p=r$ (all primes)?

asked Nov 26, 2013 at 15:27

2 votes

2 answers

117 views

Show that $\text{gcd}(a,b,c) = 1$ implies existence of $k$ such that $\text{gcd}(a, b+kc)=1$ [closed]

asked Dec 19, 2018 at 10:28

1 vote

1 answer

217 views

Let $f$ and $g $ be continuous function where $g(x)=\int_{0}^{x}f(y)(y-x)dy$. If $g$ is 3 times continuously differentiable, what about $f$?

asked Oct 27, 2018 at 6:15

1 vote

1 answer

101 views

X function of Riemann surface $y^3=(x-x_1)*(x-x_2)$

asked Aug 2, 2018 at 19:04

1 vote

0 answers

51 views

Is $\mathbb{R}^2$ with a non euclidian metric a Riemann surface?

asked Aug 9, 2018 at 3:07

1 vote

1 answer

41 views

Help me understand this theorem demonstration - Dirichlet series

asked May 17, 2017 at 9:17

1 vote

1 answer

367 views

These groups are not isomorphic but their characters are equal?

asked Jun 7, 2017 at 8:43

1 vote

1 answer

178 views

Growth of the Fourier transform of a compact function

asked Sep 2, 2019 at 17:34

0 votes

0 answers

42 views

approximation of zeta by dirichlet polynomials

asked Aug 24, 2019 at 21:16

0 votes

0 answers

108 views

is a convex function continuous on a hilbert space?

asked Feb 18, 2017 at 10:05

0 votes

1 answer

14 views

How to "invert a base" of a finite module in this exercise?

asked Jan 8, 2018 at 11:33

0 votes

1 answer

149 views

Generators of subgroups of $\mathbb{Z}^n $?

asked Nov 27, 2017 at 1:11

0 votes

0 answers

37 views

Is there a formal way to define $\mathbf{R}(X^n)$

asked Dec 19, 2017 at 8:12

0 votes

1 answer

285 views

Is there a function with prescribed zeros and poles on an elliptic curve?

asked Oct 18, 2018 at 18:57

0 votes

0 answers

23 views

Is the degree of a function related to the degree of its derivative on a Riemann surface?

asked Aug 8, 2018 at 7:36

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24 Questions

Why is the one quadratic polynomial a perfect square more often than the other?

How to derive the Euler Lagrange equation for geodesics?

How to prove concavity of $\textrm{Tr}(\exp(H+\log X))$?

Cubes differences and primality

What is the general way to rewrite an ODE with respect to a change in coordinates?

Which of those courses can get me to Theoretical Physics? [closed]

What is wrong in my reasoning on field extensions?

Surjective function from D2 to s1?

What is the genus of $y=x^n$?

how do we prove $p|q\cdot r \rightarrow p=q$ or $p=r$ (all primes)?

Show that $\text{gcd}(a,b,c) = 1$ implies existence of $k$ such that $\text{gcd}(a, b+kc)=1$ [closed]

Let $f$ and $g $ be continuous function where $g(x)=\int_{0}^{x}f(y)(y-x)dy$. If $g$ is 3 times continuously differentiable, what about $f$?

X function of Riemann surface $y^3=(x-x_1)*(x-x_2)$

Is $\mathbb{R}^2$ with a non euclidian metric a Riemann surface?

Help me understand this theorem demonstration - Dirichlet series

These groups are not isomorphic but their characters are equal?

Growth of the Fourier transform of a compact function

approximation of zeta by dirichlet polynomials

is a convex function continuous on a hilbert space?

How to "invert a base" of a finite module in this exercise?

Generators of subgroups of $\mathbb{Z}^n $?

Is there a formal way to define $\mathbf{R}(X^n)$

Is there a function with prescribed zeros and poles on an elliptic curve?

Is the degree of a function related to the degree of its derivative on a Riemann surface?