Skip to main content
Mathematics
littleO's user avatar
littleO's user avatar
littleO's user avatar
littleO
  • Member for 11 years, 10 months
  • Last seen this week
Profile Activity
Stats
52,468
reputation
3.7m
reached
1,081
answers
30
questions
Communities
View all
About

My real name: Daniel O'Connor.

I'm an associate professor in the Mathematics and Statistics department at University of San Francisco.

Background: Applied math PhD at UCLA, researched algorithms for large scale convex optimization with advisor Lieven Vandenberghe. I did a postdoc in the UCLA Department of Radiation Oncology, where I developed algorithms for radiation treatment planning.

Here's my PhD thesis: http://escholarship.org/uc/item/4z1126w3#page-1

Here are some of my stackexchange highlights: https://x.com/Singularitarian/status/1805051588282880033

Badges
View all badges
8
gold badges
99
silver badges
173
bronze badges
Top tags
View all tags
922
Score
243
Posts
22
Posts %
603
Score
130
Posts
12
Posts %
510
Score
121
Posts
11
Posts %
483
Score
78
Posts
7
Posts %
454
Score
158
Posts
14
Posts %
411
Score
77
Posts
7
Posts %
Top posts
View all questions and answers
300
Please explain the intuition behind the dual problem in optimization.
Oct 29, 2012
161
Please explain the intuition behind the dual problem in optimization.
Jan 2, 2014
123
How would you discover Stokes's theorem?
Dec 4, 2021
87
What are some examples of mathematics that had unintended useful applications much later?
Sep 7, 2013
81
How would you discover Stokes's theorem?
Dec 4, 2021
78
Why does the fundamental theorem of calculus work?
Nov 20, 2015
52
What is the Jacobian matrix?
Jan 31, 2015
52
Why do we use trig functions in Fourier transforms, and not other periodic functions?
Apr 12, 2018
52
Why is $A^TA$ invertible if $A$ has independent columns?
Jun 26, 2016
49
Intuitive proof of multivariable changing of variables formula (Jacobian) without using mapping and/or measure theory?
Aug 11, 2013
Top Meta posts
2
5
161
It’s become difficult to see visually if I’ve upvoted a post
22
Are intuition-based questions off-topic?
20
Can one create a personal math blog using the stackexchange functionality?
14
What is "the intuition behind a result"?
5
Why do *you* answer questions on math.stackexchange?
Top network posts
View all network posts
52
What was Feynman's "much better way of presenting the electrodynamics" -- which did **not** appear in the Feynman lectures?
34
Are professors at a public university in the U.S. considered to be "employed by the U.S. government"?
31
Why is it called a "trap" instruction?
28
How to parallelize this Python for loop when using Numba
28
How to parallelize this Python for loop when using Numba