bio | website | vmm.math.uci.edu |
---|---|---|
location | Univ. of California at Irvine | |
age | 83 | |
visits | member for | 4 years, 2 months |
seen | yesterday | |
stats | profile views | 6,607 |
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 .
Aug 25 |
comment |
Square root of a positive $C^\infty$ function.
Yes, and functions of this type are discussed in section 2 of the reference I gave in my answer. |
Aug 25 |
answered | Square root of a positive $C^\infty$ function. |
Aug 24 |
answered | Measure theory treatment geared toward the Riesz representation theorem |
Aug 16 |
awarded | Guru |
Aug 15 |
awarded | Enlightened |
Aug 15 |
awarded | Good Answer |
Aug 15 |
comment |
About a letter by Richard Palais of 1965.
@Mariano: Yes, I guess that was a pretty verbose "no". :-) Dick |
Aug 15 |
awarded | Nice Answer |
Aug 15 |
answered | About a letter by Richard Palais of 1965. |
Jul 13 |
comment |
angle between subspaces
Didn't you try Google? If you put "angle between subspaces" into Google you will find a ton of stuff there. |
Jul 5 |
comment |
Music: mathematical point of view (revised)
@David Feldman: THANKS! Just the sort of thing I was looking for. Interesting that he is now an emeritus professor at UCSC. I was there for a couple of years (1975-77) and wonder if we overlapped. |
Jul 5 |
answered | Music: mathematical point of view (revised) |
Jul 4 |
awarded | Yearling |
May 31 |
comment |
Can anyone recommand a good textbook for self-learning linear algebra?
I will happily second these three suggestions. Halmos book was my introduction to Linear Algebra and I loved it.--- Dick Palais |
May 11 |
comment |
What is / are the softwares to use to draw surfaces of the form of a two or three-holed torus , or torus, or torus with cusps attached to it?
@Neil "The pain arises when you want to build a 3D digital model from a mental image or 2D sketch, and you do not have equations of any kind. ...I could not see anything in the 3D-XplorMath that would help with that - am I missing something? " You are correct that 3D-XplorMath is NOT a drawing program, but what was being asked for here was a way of showing higher genus surfaces using implicit equations, and 3D-XplorMath has a user-defined object in almost every category of objects (and in particular in implicit surfaces) allowing one to create objects and see them just by writing equations |
May 11 |
comment |
What is / are the softwares to use to draw surfaces of the form of a two or three-holed torus , or torus, or torus with cusps attached to it?
@Neil Those are nice images. But please have a look at the 3D-XplorMath Mathematical Visualization program and the Virtual Math Museum mentioned in my answer below. We have worked hard to provide high quality images for use in articles such as yours and also the tools for creating them easily, precisely to avoid people having to continually reinvent the wheel and the resulting "extremely painful" experiences you mention. |
May 11 |
answered | Softwares for drawing hyperbolic surfaces , closed, with boundaries or with punctures ? |
May 11 |
answered | What is / are the softwares to use to draw surfaces of the form of a two or three-holed torus , or torus, or torus with cusps attached to it? |
May 3 |
awarded | Good Answer |
Apr 30 |
asked | Reference wanted for application of Parametric Transversality |