bio | website | vmm.math.uci.edu |
---|---|---|
location | Univ. of California at Irvine | |
age | 84 | |
visits | member for | 4 years, 11 months |
seen | May 14 at 20:21 | |
stats | profile views | 7,132 |
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 .
May 22 |
answered | Why don't more mathematicians improve Wikipedia articles? |
May 17 |
comment |
Are there proofs that you feel you did not “understand” for a long time?
How about the proof that Einstein is said to have (re)discovered as a teen-ager? It is clear that the areas of similar right triangles is proportional to the squares of corresponding sides---in particular to the squares of their hypotenuses. Dropping a perpendicular from the vertex of the right triangle onto the hypotenuse c divides it into two similar triangles with hypotenuses a and b, hence: kc^2 = ka^2 + k*b^2 so c^2 = a^2 + b^2 |
May 10 |
awarded | Nice Answer |
May 2 |
answered | A simple and good reference about solitons |
May 1 |
answered | Does a *topological* manifold have an exhaustion by compact submanifolds with boundary? |
Apr 27 |
awarded | Nice Answer |
Apr 26 |
awarded | Good Answer |
Apr 20 |
awarded | Necromancer |
Apr 20 |
comment |
Which hard mathematical problems do you have to solve to earn bitcoins ?
Is it known whether there is an algorithm using a quantum computer (i.e., qubits instead of bits) for simplifying the Bitcoin mining? |
Apr 19 |
answered | What are the invariant Pseudo-differential operators on a Lie group? |
Apr 19 |
revised |
Great mathematics books by pre-modern authors
corrected misspelling |
Apr 19 |
answered | Great mathematics books by pre-modern authors |
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 |