Skip to main content
MathOverflow
Anthony Quas's user avatar
Anthony Quas's user avatar
Anthony Quas's user avatar
Anthony Quas
  • Member for 14 years, 1 month
  • Last seen this week
Profile Activity
Stats
23,185
reputation
780k
reached
377
answers
41
questions
Communities
View all
About

The pic is the phase portrait of a simple "piecewise isometry". Define a map by sliding the two halves of the plane: the top half to the right; the lower half to the left and then rotate. Around each periodic point of the map there's a "periodic island". These are what are in the image...

Badges
View all badges
5
gold badges
63
silver badges
98
bronze badges
Top tags
View all tags
435
Score
122
Posts
29
Posts %
324
Score
91
Posts
22
Posts %
318
Score
84
Posts
20
Posts %
285
Score
39
Posts
9
Posts %
209
Score
58
Posts
14
Posts %
157
Score
39
Posts
9
Posts %
Top posts
View all questions and answers
answer
180
Tweetable Mathematics
Apr 26, 2017
answer
66
Is this seemingly novel irrational constant also transcendental?
Jun 7, 2012
answer
52
Old books still used
Dec 29, 2012
answer
37
how to find/define eigenvectors as a continuous function of matrix?
Dec 11, 2012
answer
31
"Surprising" examples of Markov chains
Oct 21, 2016
answer
29
Examples of common false beliefs in mathematics
Jul 3, 2011
answer
29
A translation of the Cantor set contained in the irrationals
Feb 22, 2014
answer
28
Silly me & Van der Waerden conjecture
Mar 3, 2014
answer
27
A natural construction of real numbers?
Aug 10, 2021
answer
26
Elementary applications of linear algebra over finite fields
Jan 14, 2013
Top Meta posts
1
0
6
What's the purpose of the favorite button?
Top network posts
View all network posts
21
How do I track down the sources of solutions which students have used to cheat on exams?
16
Who was Richard Thompson?
11
Measurability Question?
11
What is happening grammatically in the street name "Rue de Seine"?
9
SNCF Bornes Libre Service with US Credit Cards