10,084 reputation
14469
bio website vmm.math.uci.edu
location Univ. of California at Irvine
age 82
visits member for 3 years, 9 months
seen Apr 8 at 22:40
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
18
awarded  Nice Answer
Apr
17
answered Is rigour just a ritual that most mathematicians wish to get rid of if they could?
Apr
15
answered Old books still used
Apr
11
revised Fixed point theorems
A more general example
Apr
11
comment Fixed point theorems
...has a unique solution, provided ε is sufficiently small.
Apr
10
answered Fixed point theorems
Apr
9
awarded  Civic Duty
Mar
27
awarded  Nice Answer
Feb
6
awarded  Enlightened
Feb
6
awarded  Nice Answer
Jan
13
comment Lie group action with no slice
@Yves Cormulier I don't think that's so Yves. If it were then even a compact group action wouldn't have a slice at an isolated fixed point p, whereas in fact an invariant neighborhood of p is a slice at p in that case.
Jan
13
revised Lie group action with no slice
added 22 characters in body
Jan
13
comment Lie group action with no slice
After thinking about my answer a bit I realized that an even simpler example is the action of the group Z of integers on the circle generated by rotation through an irrational angle.
Jan
13
answered Lie group action with no slice
Jan
10
awarded  Popular Question
Dec
28
awarded  Good Answer
Dec
28
awarded  Nice Question
Dec
9
awarded  Enlightened
Dec
7
awarded  Nice Answer
Dec
7
comment Notes for Bott's 1963 lectures on Morse theory
I did some more searching with Google and found that Amazon has a reference to: "Lectures on Morse theory: [revised and expanded version of notes of lectures delivered at Professor R. Bott's topology seminar at Harvard in February and March of 1963 [Unknown Binding] Richard S Palais (Author)" with Brandeis Univ, listed as the publisher. I suspect this must have been an early preprint version of "Morse Theory on Hilbert Manifolds"