bio  website  math.rice.edu/~andyp 

location  Houston, TX  
age  35  
visits  member for  5 years 
seen  10 hours ago  
stats  profile views  13,205 
associate professor at Rice University
1d

comment 
How to best fit for linear vs sinusoidal curve
MO is not for homework and is intended for questions at the mathematics PhD level and above. I've voted to close. 
1d

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About Gödel's incompleteness theorems
This is offtopic and I've voted to close. 
Oct 22 
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Firstorder nonlinear ordinary differential eqauation
MO is not for homework and is intended for questions at the mathematics PhD student level and above. I've voted to close. 
Oct 18 
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Stronger than Gerretsen
MO is not for puzzles (also, the question makes no sense as written: what is $p$ and $r$ and $R$?). I've voted to close. 
Oct 18 
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Topological conjugacy
MO is not for homework. 
Oct 14 
awarded  Yearling 
Sep 30 
awarded  Explainer 
Sep 17 
awarded  Notable Question 
Aug 31 
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Top specialized journals
@BenoîtKloeckner : They have great ambitions, but I think that at this point they have not reached them (and who knows what will happen when they start charging authors to publish in them). 
Aug 25 
awarded  Enlightened 
Aug 25 
awarded  Nice Answer 
Aug 24 
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Second homology of mapping class group of genus 3
Thanks Kevin!!! 
Aug 24 
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Help with my research topic
While I am sorry you are having trouble, questions of the form "give me a thesis topic" are offtopic and I have voted to close. 
Aug 24 
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Second homology of mapping class group of genus 3
Sorry, typed this on my phone and will not have access to a computer soon. Can someone fix the arxiv link and the tex? Thanks! 
Aug 24 
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Second homology of mapping class group of genus 3
@ThiKu : while I think that Ivanov's survey is great, it is pretty dated at this point (eg it predates MadsenWeiss). 
Aug 24 
answered  Second homology of mapping class group of genus 3 
Aug 23 
comment 
Why calculus textbooks do not include the natural integration constants in the tables of integrals?
Why on earth would anyone want to do this? It solves no problem, is confusing, and is entirely arbitrary (I could write down any number of other conventions that are equally "natural" and give different answers). No offense, but this is a totally absurd suggestion. It's also not really a researchlevel math question, so I have voted to close. 
Aug 22 
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How does the AtiyahSinger index theorem in a relative setting related to “ringed spaces and pseudocoherent complexes of finite tordimension”?
It would be helpful if you would give us a link to the article and tell us who was being interviewed. 
Aug 20 
awarded  Nice Answer 
Aug 3 
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Does every compact manifold exhibit an almost global chart
@DavidSpeyer : Modifying a Morse function such that it has only one local max and min (or, equivalently, modifying a handle decomposition such that it has exactly one $0$handle and one $n$handle) is pretty standard. For instance, it is one of the first steps in a proof of the hcobordism theorem, so can be found in any book that proves that (e.g. Milnor's "Lectures on the hcobordism theorem"). Probably Ranicki's "Algebraic and Geometry Surgery" also contains a proof. 