Harald Hanche-Olsen

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Name Harald Hanche-Olsen
Member for 3 years
Seen May 2 at 15:39
Website
Location Trondheim, Norway
Age 59
Main interests: Partial differential equations, especially hyperbolic systems of conservation laws. See my home page if you want to know more.
6

Questions
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Why is an elliptic curve a group?

aug 31 10 at 20:33 lagsa7 21●1

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Is this a known compactification of the natural numbers?

mar 17 10 at 0:55 François G. Dorais♦ 22.6k●2●48●113

 

 
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Are these two notions of Lipschitz hypersurface equivalent?

jun 17 10 at 0:48 Tom Goodwillie 26.7k●2●58●110

 

 

95

Answers
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83
Favorite popular math book (2)
44
Probabilistic Proofs of Analytic Facts
24
Why does the Gamma-function complete the Riemann Zeta function?
24
What is convolution intuitively?
24
How to define tuples?
23
Roots of truncations of e^x - 1
20
Visualisation of Riemann-Stieltjes-Integrals
19
Example of continuous function that is analytic on the interior but cannot be analytically continued?
19
Do names given to math concepts have a role in common mistakes by students? (2)
16
What does the property that path-connectedness implies arc-connectedness imply?
16
Egalitarian measures
15
Famous mathematical quotes
12
Gelfand-Naimark from the category-theoretic point of view
12
Proving “almost all matrices over C are diagonalizable”.
12
Formally real Jordan algebras
11
The Importance of ZF
11
Best mathematics conference?
9
Typo/grammar checker for LaTeX
9
How does $\pi_1(SO(3))$ relate exactly to the waiters trick?
9
closed irreducible subspaces in L²(R)
9
What are the worst notations, in your opinion ?
9
Does f(x)~g(x) imply $f(x) \asymp g(x)$?
9
Vector spaces without natural bases
8
Do you read the masters?
8
Implicit derivative?
8
What does Gibbs phenomenon shows the nature of Fourier Series
8
What is an intuitive view of adjoints? (version 2: functional analysis)
8
What are some interesting ways of making new metrics out of old metrics?
7
Notions of Matrix Differentiation
7
Digital Pen for Math: Your Experiences?
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