Willie Wong's user avatar
Willie Wong's user avatar
Willie Wong's user avatar
Willie Wong
  • Member for 14 years, 1 month
  • Last seen this week
4 votes
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Extension of a function from almost everywhere to everywhere

4 votes
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energy trapping for NLS

4 votes
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A generalization of holomorphic functions

4 votes

Creating high quality figures of surfaces

4 votes

Math History books

4 votes
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Rellich-Necas identity

4 votes
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The comparison between the square of the functional value and the sum of squares of the $L^2$ norms of function and its Laplacian

4 votes

What are the computationally useful ways of thinking about Killing fields?

4 votes
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Good books on wave equations and fourier analysis

4 votes

Undiscovered for a long time before it is realised it is the same concept developed under different names.

4 votes
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Is anything known about $w^*(x)=\sup_y w(x+y)/w(y)$ for measurable functions w on $R^n$

4 votes
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Criterion for finite time blowup of an ODE

4 votes
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Retarded coordinates on (flat) spacetime

4 votes
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Is there an Error on pg. 17 of Tromba's "Teichmuller Theory in Riemannian Geometry"?

4 votes

Finite dimensional "Mountain Pass Lemma"

4 votes
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Work on an Einstein-Hilbert type action but with the *absolute value* of scalar curvature?

4 votes
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Yang Mills gradient/heat flow on 4-torus

4 votes
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Partitions of Unity

4 votes

hodographic transformation

4 votes

reference for Noether's theorem

4 votes
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Endpoint Strichartz Estimates for the Schrödinger Equation

4 votes
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Does Hölder continuity imply smoothness for the CMC equation: $u:D^2\rightarrow\mathbb{R}^n$, $\Delta u = 2H\partial_xu\times\partial_yu$, $H$ constant?

4 votes

Injective flow lines of a vector field near a closed orbit

4 votes
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Kulkarni-Nomizu square root of the Riemann tensor

4 votes
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What is the most general Carathéodory-type global existence theorem?

4 votes
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stability of two-sided sectional curvature bounds in Lorentzian geometry

4 votes

Derivation on $SO(3)$

4 votes
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Sobolev imbedding result; proof

4 votes
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A proof for the existence of smooth solution of PDE in form $\Delta u=f(x, u)$ in Michael E. Taylor's book Partial Differential Equations III

4 votes
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Correct curvature tensor of symmetric space of positive definite matrices with trace metric?

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