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Uria Mor's user avatar
Uria Mor's user avatar
Uria Mor's user avatar
Uria Mor
  • Member for 9 years, 9 months
  • Last seen more than a week ago
6 votes
1 answer
495 views

For what values of t, the solution for this equation exist

5 votes
2 answers
171 views

Show that if $ |f( \frac{1}{n}) | \leq \frac{1}{n!}$ then $0$ is an essential singularity

4 votes
2 answers
926 views

Heat equation "like" problem: solve $u_{tt} -u_{xx} -u_t -u_x = 0$ using differential operator

4 votes
1 answer
518 views

Spectrum of sum of standard operator

4 votes
2 answers
64 views

Improper multiple integals involving inner porduct

4 votes
1 answer
176 views

VERIFICATION: Prove that $\int_{-\infty}^{\infty}\frac{1-b+x^{2}}{\left(1-b+x^{2}\right)^{2}+4bx^{2}}dx=\pi$ for $0<b<1$

3 votes
1 answer
248 views

Evaluate $\int_{ - \infty}^{\infty} \frac{dx}{1+x^2}$ using complex integration

3 votes
0 answers
53 views

Well posedness of PDEs of the form $u_{tt} + \left[ P ( \partial_x)\right]^2u=0$

2 votes
2 answers
149 views

Ex 2.5 in Rotman's introduction to group theory

2 votes
1 answer
478 views

Minimal orthogonal projections, and distances in Hilbert spaces.

2 votes
1 answer
163 views

Three closed sets in $T_4$ space which have an empty intersection.

2 votes
0 answers
55 views

No open subset $U \subset \mathbb{C}$ so that $f|_U :U \rightarrow \mathbb{C} \smallsetminus {0}$ where $f=e^z$ is a bijection

2 votes
1 answer
466 views

A $\mathcal{C}^1$ function $f: \mathbb{R} \rightarrow \mathbb{R} $ preserve Jordan measurability

2 votes
0 answers
50 views

How to find derivative of $\left\Vert x-a\right\Vert ^{p}:\mathbb{R}^{n}\rightarrow\mathbb{R}$?

2 votes
0 answers
59 views

Preparations to finals, validation needed

2 votes
1 answer
2k views

f continuously differentiable implies f is Lipschitz on compact subsets

2 votes
0 answers
101 views

Need help in understanding the question. Elemntary number theory

2 votes
0 answers
108 views

Need a hint with permutations and pigeonhole-principle question

1 vote
1 answer
277 views

Multinomial identity - guidance needed

1 vote
1 answer
186 views

Finitely generated abelian groups isomorphism

1 vote
1 answer
537 views

How many solutions for the equation $x_1 + x_2 + x_3 = n $ for positive integers when...

1 vote
1 answer
265 views

Group homomorphism between integers and real

1 vote
2 answers
187 views

Cyclic finite groups and their direct product

1 vote
2 answers
115 views

Guidance and sanity check needed - question on the isomorphism theorems

1 vote
2 answers
244 views

Legendre symbol, a theoretical question.

1 vote
1 answer
58 views

How to solve a non-linear ODE

1 vote
1 answer
176 views

Bounds of ordinary differential equation

1 vote
1 answer
271 views

ODE, Picard approximation of a second order equation: How do I make sure that this is correct.

1 vote
3 answers
77 views

ODE, a first order none-linear equation with ratios and exponents

1 vote
1 answer
196 views

Runs of white balls in sampling without replacement