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DVD
  • Member for 10 years, 11 months
  • Last seen more than 3 years ago
15 votes
1 answer
474 views

Coefficients of binomial continued fractions

11 votes
1 answer
1k views

On the four and five color theorems

10 votes
2 answers
634 views

A matrix w/integer eigenvalues and trigonometric identity

8 votes
1 answer
914 views

Eigenvalues of a tridiagonal trigonometric matrix

7 votes
2 answers
502 views

Closed curves in 3D

7 votes
0 answers
351 views

Tridiagonal matrix w/trigonometric eigenvalues

7 votes
1 answer
263 views

A new graph invariant? The maximum number of non-equivalent colorings with $n$ colors.

6 votes
2 answers
128 views

Rational fraction expression for triangular powers of 2

5 votes
0 answers
282 views

Equations with Chebyshev polynomials

4 votes
2 answers
423 views

For natural $n$, prove $\prod_{k=1}^n \tan\left(\frac{k\pi}{2n+1}\right) = 2^n \prod_{k=1}^n \sin\left(\frac{k\pi}{2n+1}\right)=\sqrt{2n+1}$

4 votes
1 answer
676 views

On Alexander polynomial of a knot

4 votes
2 answers
265 views

Product of binary matrices with binary eigenvalues

3 votes
0 answers
155 views

Binary eigenvalues matrices and continued fractions

2 votes
1 answer
177 views

Determinants of products of binary matrices and binomial coefficients

2 votes
2 answers
996 views

On the last digit of a power

2 votes
3 answers
968 views

On integral of a function over a simplex

2 votes
1 answer
298 views

A Diophantine equation and decimal digits

2 votes
0 answers
73 views

On spectrum of periodic boundary value problem

2 votes
0 answers
70 views

Isospectral transformation of ODE

1 vote
1 answer
132 views

On the Hex/Nash connection game theorem

1 vote
0 answers
60 views

On the knot invariant

1 vote
2 answers
331 views

Quick solution check for the TSP

1 vote
0 answers
122 views

Relationship b/w PDE periodic boundary values

1 vote
1 answer
65 views

on a quantisation of the bell curve

1 vote
1 answer
228 views

Help with hyperbolic integral $\int_0^\infty x\frac{\cosh(bx)}{\sinh(x)}dx.$

1 vote
0 answers
65 views

Second highest order coefficient of ordinary differential operator

0 votes
1 answer
215 views

Generating primes from other primes

0 votes
1 answer
99 views

A boundary problem for analytic function

-1 votes
1 answer
75 views

An application of two 3x3 matrices identity [closed]