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Stephan Kulla

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real-analysis

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17 posts edited

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945 votes cast

Answers (172)

Votes Activity Newest

24	What are some things we can prove they must exist, but have no idea what they are?
24	Find the eigenvalues of a projection operator
15	Can a function be differentiable at the end points of its (closed interval) domain?
10	Why it is absolutely mistaken to cancel out differentials?
8	Innocent looking open problems in real analysis

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Reputation (6,210)

+10	Can a function be differentiable at the end points of its (closed interval) domain?
+10	Find the eigenvalues of a projection operator
+10	Lie algebra of R^n
+10	Matrix multiplication by scalar is commutative

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Questions (74)

Votes Activity Newest

25	Supremum of all y-coordinates of the Mandelbrot set
22	Is there an epsilon-delta definition of the second derivative?
13	Arithmetic rules for big O notation, little o notation and so on…
13	Is there an example for an undefinable number?
9	Mean value theorem for random variables (inside an expectation value)

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Tags (138)

79 real-analysis × 63	32 big-list × 7
68 calculus × 61	32 open-problem × 2
51 linear-algebra × 17	26 eigenvalues-eigenvectors × 2
42 soft-question × 10	24 derivatives × 6
39 sequences-and-series × 25	14 limits × 9

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Bookmarks (33)

Votes Activity Newest Views Added

345	Can every proof by contradiction also be shown without contradiction?
160	How far can one get in analysis without leaving $\mathbb{Q}$?
152	What's the point in being a “skeptical” learner [closed]
111	What are the issues in modern set theory?
52	What are the rules for equals signs with big-O and little-o?

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Accounts (25)

	Mathematics	6,210 rep	19 silver badges52 bronze badges
	Stack Overflow	3,800 rep	2 gold badges18 silver badges31 bronze badges
	Mathematics Educators	1,983 rep	6 silver badges25 bronze badges
	MathOverflow	497 rep	2 silver badges11 bronze badges
	Economics	403 rep	1 gold badge4 silver badges7 bronze badges

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Votes cast (945)

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932	up		497	question
13	down		448	answer

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