User Serpahimz - Mathematics Stack Exchange

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6

votes

3

answers

106

views

Every simple group of odd order is isomorphic to $\mathbb{Z}_{p} $ iff every group of odd order is solvable

group-theory simple-groups

dec 26 at 20:06 DonAntonio 46.8k

1

5

votes

1

answer

58

views

Permutation Group as quotient of Free Group

group-theory free-groups

dec 25 at 21:09 Hagen von Eitzen 42.4k

4

votes

1

answer

27

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Characterization for compact sets in $\mathbb{R} $ with the topology generated by rays of the form $\left(-\infty,a\right) $

homework general-topology compactness

2d ago Asaf Karagila 91k

4

votes

2

answers

40

views

Question regarding connected subspaces

homework general-topology

may 7 at 10:15 Abel 4,168

4

votes

2

answers

56

views

Looking for a counter example for non-connected intersection of descending chain of closed connected sets

homework general-topology examples-counterexamples

may 7 at 0:08 Neal 6,452

1

4

votes

1

answer

33

views

Question regarding Poisson process

stochastic-processes

apr 24 at 15:21 Did 103k

4

votes

6

answers

176

views

Showing that $\frac{x!}{x^{x}}$ tends to zero as x tends to infinity

real-analysis limit

mar 5 at 18:27 vonbrand 6,578

4

votes

2

answers

98

views

Two questions regarding Ordinal Numbers.

set-theory ordinals

jan 26 at 17:18 Cameron Buie 27.6k

4

votes

2

answers

59

views

Showing there is only one isomorphism between well ordered sets using transfinite induction

set-theory order-theory ordinals transfinite-recursion

jan 12 at 23:45 Asaf Karagila 91k

3

votes

2

answers

89

views

Showing the metric $\rho=\frac{d}{d+1} $ induces the same toplogy as $d$

general-topology metric-spaces

apr 14 at 18:56 Peter Tamaroff 25.8k

2

3

votes

1

answer

81

views

Problem showing a certain series converges

homework sequences-and-series

feb 14 at 17:27 Cameron Buie 27.6k

2

votes

1

answer

38

views

Proof that the interior of any union of closed sets with empty interior in a compact Hausdorff space is empty

homework general-topology compactness

1d ago Stefan H. 1,816

2

votes

1

answer

44

views

Showing a conditional Poisson Process does not have independent increments

homework stochastic-processes

apr 27 at 10:02 Ben Derrett 1,583

2

votes

3

answers

37

views

Small claim regarding addition of cardinals

set-theory cardinals

apr 11 at 11:47 Martin Sleziak 20.3k

1

2

votes

1

answer

64

views

Justifying taking limit into an integral

real-analysis integration

mar 14 at 12:40 Elmar Zander 1,008

1

2

votes

1

answer

131

views

Eigenvalues of symmetric matrix in real inner product space

homework matrices eigenvalues inner-product-space

dec 14 at 17:48 Martin Argerami 16.9k

1

vote

1

answer

25

views

Question regarding the definition of Local Connectedness

general-topology

may 17 at 15:17 Tobias Kildetoft 4,726

1

vote

1

answer

49

views

Conditions for taking a limit into an infinite sum

calculus real-analysis convergence

may 8 at 13:29 Serpahimz 394

1

vote

3

answers

46

views

Proving $\left|\frac{\left(\log\left(n\right)\right)^{c}}{n^{d}}\right|$ tends to zero [duplicate]

homework limit

mar 9 at 16:10 Avatar 8,345

1

vote

2

answers

55

views

Convolution of continuous function with $\mathcal{C}^{1} $ function

real-analysis convolution

feb 17 at 12:33 Ivan 700

1

vote

2

answers

70

views

Looking for a simple proof that groups of order $2p$ are up to isomorphism $\mathbb{Z}_{2p}$ and $D_{p}$ .

group-theory finite-groups cyclic-groups

jan 31 at 13:52 Derek Holt 8,293

1

vote

3

answers

78

views

Question regarding well-ordering theorem

set-theory axiom-of-choice order-theory

jan 12 at 23:25 Asaf Karagila 91k

1

vote

2

answers

36

views

$\ell_{p}$ space closed to addition

real-analysis convergence vector-spaces lp-spaces

jan 5 at 14:27 Learner 3,329

1

vote

1

answer

64

views

Every two finite solvable groups of the same order have the same composition factors

group-theory finite-groups

jan 1 at 16:36 Babak S. 27.8k

1

vote

2

answers

45

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Inverse of order preserving transformation

elementary-set-theory order-theory

dec 29 at 21:14 Asaf Karagila 91k

1

vote

1

answer

64

views

Small question regarding norms and Holder conjugates.

norm normed-spaces

dec 28 at 23:49 copper.hat 28.5k

1

vote

2

answers

73

views

Dedekind finite union of Dedekind finite sets is Dedekind finite

set-theory

dec 23 at 15:05 Asaf Karagila 91k

1

vote

1

answer

63

views

A differentiable injective function with Lipschitzian Inverse

functions derivatives inverse

dec 22 at 14:10 Landscape 7,720

0

votes

3

answers

36

views

An algorithm to solve a problem at minimal complexity

algorithms

apr 5 at 20:08 dtldarek 8,259

0

votes

1

answer

41

views

Showing a certain function is open and not closed

general-topology functions

mar 14 at 21:12 Henno Brandsma 9,722

Serpahimz

34 Questions