10,244 reputation
14671
bio website vmm.math.uci.edu
location Univ. of California at Irvine
age 83
visits member for 4 years
seen Jul 21 at 0:13
I'm a Professor at UC Irvine, but spent most of my career at Brandeis. My research areas: Differential Topology, Transformation Groups, and Global Analysis. Recently I developed a math visualization program, 3D-XplorMath, freely available at http://3D-XplorMath.org) and a companion website, the Virtual Math Museum at http://VirtualMathMuseum.org. Last year I co-authored a differential equations text with my son Bob, most of which is downloadable from http://ode-math.com .

Apr
19
revised Great mathematics books by pre-modern authors
corrected misspelling
Apr
11
revised Fixed point theorems
A more general example
Jan
13
revised Lie group action with no slice
added 22 characters in body
Sep
21
revised Definition of Sobolev spaces as a space of sections of certain type
Added a link to a copy of referenced work; deleted 1 characters in body; added 1 characters in body
Aug
25
revised Square root of a positive $C^\infty$ function.
improved citation
Mar
11
revised Leibnizian calculus textbook
added 264 characters in body
Feb
28
revised When do isometric actions exist?
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Feb
11
revised Maxwell Stress Tensor and Equations in Mathematician's Language
edited body
Feb
9
revised Converse of the Banach fixed point theorem
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Feb
9
revised Converse of the Banach fixed point theorem
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Feb
9
revised Converse of the Banach fixed point theorem
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Feb
2
revised Does this formula have a rigorous meaning, or is it merely formal.
deleted 2 characters in body
Feb
2
revised Does this formula have a rigorous meaning, or is it merely formal.
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Feb
2
revised Does this formula have a rigorous meaning, or is it merely formal.
added 185 characters in body
Dec
25
revised Tubular neighbourhood of a smooth curve
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Dec
25
revised Tubular neighbourhood of a smooth curve
added 212 characters in body
Dec
4
revised If $f:R^n \to R$ is a smooth real-valued function such that $\nabla f : R^n \to R^n$ is a diffeomorphism, what can one conclude about the behavior of $f(x)$ at infinity?
added 210 characters in body
Nov
25
revised Killing vectors and Ricci Tensor
Adde comment on physical interpretation
Oct
23
revised Newton equations, second order equation and (im)possible motions
fixed a misprint; added 57 characters in body
Oct
17
revised Fourier transform of fractional differential operator and Plancherel formula equivalent for fractional norms
added 213 characters in body