User Stefan - Mathematics Stack Exchange

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	1,227 reputation	bio	website		visits	member for	11 months
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1

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3

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87

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Question regarding definition of limit point and uniqueness

general-topology analysis

feb 14 at 3:06 Asaf Karagila 90.9k

1

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3

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71

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limit of $\frac{e^{2x}-x^2+x}{\cos(x)-1}$ as $x\to 0$.

feb 1 at 6:51 enzotib 2,211

1

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2

answers

38

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Relation between the notions connected and disconnect, confused

general-topology

jan 22 at 21:05 K. Stm. 1,645

1

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1

answer

146

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Let X and Y be Banach spaces, show that if they are isomorphic, then X is reflexive iff Y is reflexive

analysis functional-analysis banach-spaces

jan 7 at 22:00 Community♦ 1

1

vote

1

answer

91

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Separation Theorem in Euclidean Space.

linear-algebra geometry euclidean-geometry convex-analysis

jan 4 at 22:23 Ben Millwood 3,752

1

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2

answers

62

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Conclusion in the proof that every Hilbert space has an orthonormal basis regarding countable index set

analysis functional-analysis hilbert-spaces

dec 13 at 23:22 J. Loreaux 917

1

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1

answer

97

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Fact about the orthogonal complement of an subset in pre-Hilbert space

homework linear-algebra analysis functional-analysis inner-product-space

nov 29 at 13:45 Davide Giraudo 56.2k

1

vote

2

answers

69

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Poker, number of three of a kind, multiple formulaes

combinatorics game-theory card-games

nov 25 at 17:57 André Nicolas 161k

1

vote

3

answers

88

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Sum of two sine curves

trigonometry

nov 20 at 22:23 Community♦ 1

1

vote

1

answer

75

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graphical representation of all combinations

combinatorics

nov 12 at 0:36 Henry 32.1k

1

vote

1

answer

58

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Show that a certain point lies outside a ball, might be simple but i am stuck…

geometry analysis arithmetic

nov 9 at 15:21 martini 15.7k

1

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4

answers

149

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Proof that $\overline{A \cap B} \subseteq \overline{A} \cap \overline{B}$

homework general-topology functional-analysis

oct 14 at 18:27 R.G. 158

1

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2

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73

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show that a functional operator $F : X \to \mathbb{R}$ is continous

homework analysis functional-analysis

oct 12 at 19:46 fgp 4,839

1

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2

answers

119

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The Vector Space over another Vector Space

linear-algebra multilinear-algebra

jul 17 at 20:22 Henning Makholm 53.6k

1

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2

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180

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set in $\mathbb{R}$ which is not a Borel-set [duplicate]

analysis measure-theory descriptive-set-theory

jul 4 at 22:17 ncmathsadist 17.2k

1

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1

answer

36

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connection between the support and the representation of a distribution

homework analysis fourier-analysis distribution-theory

jun 26 at 16:45 Davide Giraudo 56.2k

1

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1

answer

45

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whats the order of a distributional derivate?

homework terminology distribution-theory

jun 26 at 11:25 Willie Wong♦ 30.7k

1

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2

answers

322

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Topological Proof that every Interval $I \subset \mathbb{R}$ is connected

general-topology

jun 24 '12 at 15:35 Amitesh Datta 5,997

1

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1

answer

64

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How can an ordinary function be a distribution?

analysis functional-analysis distribution-theory

jun 23 '12 at 11:41 Mad Scientist 129

1

vote

1

answer

93

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Basisfunctions for a Schauder-Faber-Basis

analysis functional-analysis

jun 22 '12 at 12:30 Byron Schmuland 15.4k

1

vote

1

answer

130

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Are test/bump functions always bounded?

functional-analysis distribution-theory

jun 22 '12 at 12:30 Byron Schmuland 15.4k

0

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2

answers

33

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If $[L : K ] = n$, then for every irreducible polynomial $f$ is $\operatorname{deg}(f) \le n$.

abstract-algebra galois-theory

may 6 at 17:41 Daniel Mejia 72

0

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1

answer

34

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There could no multiplication on a three dimensional vector space defined similar to complex multiplication, but what an field extension of degree 3?

abstract-algebra galois-theory

may 1 at 22:56 rschwieb 20.8k

1

0

votes

0

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14

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Graphical solution of LOP with three variables and a parameter

linear-algebra linear-programming

apr 15 at 16:54 Stefan 1,227

0

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3

answers

29

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Statement of the Term-Test for convergent series

sequences-and-series analysis convergence

mar 26 at 15:50 Sami Ben Romdhane 8,101

0

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1

answer

26

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Distance between to points on opposite sides of a plane is greater then distance between the points and the plane

linear-algebra geometry

mar 11 at 0:22 Berci 20.7k

0

votes

2

answers

109

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Nash Equilibrium for the prisoners dilemma when using mixed strategies

linear-programming game-theory

mar 8 at 14:09 Gugg 1,000

0

votes

2

answers

148

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GameTheory, Solve for optimal strategies by solving a system of linear equations

linear-programming game-theory

mar 6 at 19:49 memo 183

0

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1

answer

31

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Sections, Transversals and Quotient Maps

abstract-algebra set-theory category-theory

feb 19 at 17:29 rschwieb 20.8k

0

votes

1

answer

41

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Presentation of symmetric group

abstract-algebra group-theory finite-groups

feb 18 at 2:29 Community♦ 1

Stefan

106 Questions