Harald Hanche-Olsen

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Name Harald Hanche-Olsen
Member for 5 months
Seen 5 hours ago
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Location Trondheim, Norway
Age 56
Currently (2009/2010) on sabbatical leave at Penn State University, State College, PA. Main interests: Partial differential equations, especially hyperbolic systems of conservation laws.
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Is this a known compactification of the natural numbers?

mar 17 at 0:55 François G. Dorais 3,510●7●22

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Why is an elliptic curve a group?

jan 8 at 22:58 Ilya Nikokoshev 5,908●1●7●32

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Answers
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Favorite popular math book (2)
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Probabilistic Proofs of Analytic Facts
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Roots of truncations of e^x - 1
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Egalitarian measures
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How to define tuples?
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Example of continuous function that is analytic on the interior but cannot be analytically continued?
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Why does the Gamma-function complete the Riemann Zeta function?
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Visualisation of Riemann-Stieltjes-Integrals
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closed irreducible subspaces in L²(R)
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What does the property that path-connectedness implies arc-connectedness imply?
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What is an intuitive view of adjoints? (version 2: functional analysis)
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Famous mathematical quotes
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Gelfand-Naimark from the category-theoretic point of view
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Notions of Matrix Differentiation
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The Importance of ZF
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How does $\pi_1(SO(3))$ relate exactly to the waiters trick?
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Proving “almost all matrices over C are diagonalizable”.
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What are some interesting ways of making new metrics out of old metrics?
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Best mathematics conference?
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Explicitly describing extreme points of infinite dimensional convex sets
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Dimension Leaps
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What’s the space of smooth functions in L^2(R)?
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bounding roots of a polynomial with Rouche’s Theorem
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Extreme point compact convex set.
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What are the worst notations, in your opinion ?
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Digital Pen for Math: Your Experiences?
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How do you motivate a precise definition to a student without much proof experience?
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What does Gibbs phenomenon shows the nature of Fourier Series
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A geometric interpretation of independence?
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Finite interpolation by a nondecreasing polynomial
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