1,441 reputation
726
bio website ellipsix.net
location Wuhan, China
age 28
visits member for 4 years, 4 months
seen yesterday

I'm a postdoc doing research in high-energy particle physics. I also have a hobby interest in computer programming.

You can find me on Twitter, or check out my blog and personal website! Or you can email me at stack@ellipsix.net.

However, please don't contact me through any other channel about something that should be handled through this site. If you do, I'll probably just tell you to post it here.


Dec
14
comment Is it always true that (a,b,c)(a,b,c) = (a,c,b)?
You're using cycle notation, right? I was confused for a minute.
Dec
11
comment Operator $\nabla$
This would be so much better if you didn't have an image full of math, and instead typed out a summary.
Dec
11
comment riddle that involves elementary geometry
I think you might have a typo? "grid vertices of each triangle with side 2 are 1-colored"
Dec
9
awarded  Caucus
Dec
8
awarded  Explainer
Dec
8
answered Integral of Rational Functions
Dec
8
revised Integral of Rational Functions
improve math formatting for readability
Dec
8
suggested approved edit on Integral of Rational Functions
Dec
6
comment How to prove that there are infinitely many primes without using contradiction
@shooting-squirrel um... huh? :-P I'm sorry but I couldn't make any sense of that. (Though admittedly, I have a hard time imagining any objection to proof by contradiction that would admit a sensible explanation, so don't take that as a judgment on your ability to explain things.)
Dec
5
comment What is a simple example of an unprovable statement?
Yep; I was also targeting my comment at others who might come along and misinterpret yours. It seems to be a common misinterpretation. No offense intended! (in case there was any perceived)
Dec
5
comment What is a simple example of an unprovable statement?
I agree with that, but I do still think there is considerable value in trying to explain complex concepts in a manner accessible to laypeople - not just to the laypeople it is being explained to, but also to the experts doing the explaining.
Dec
5
comment Dimensional Regularization
If this is still of interest, take a look at this question on Physics.
Dec
2
revised Solving a second order differential equation using complex numbers
improve formatting and tags
Dec
2
suggested approved edit on Solving a second order differential equation using complex numbers
Nov
30
comment % of % - Please Help Me Prove My Friend Wrong
@MarcvanLeeuwen this is true. I thought it might be useful to provide two different ways of thinking about it, since I use each of them in certain circumstances. I would note that I posted my answer when there were already several perfectly good answers, and I see it (mine) as a followup or complement to those, for readers who are interested in a different perspective. Perhaps I should edit that in.
Nov
30
comment % of % - Please Help Me Prove My Friend Wrong
That being said, perhaps including the names and links to Wikipedia articles may be more confusing than necessary.
Nov
30
comment % of % - Please Help Me Prove My Friend Wrong
@MarcvanLeeuwen I included the Bayesian interpretation because I thought it would be useful for the OP to see why the probability of the same event can be a different number depending on context. In particular, why the probability of the DVD being on the porch can be quoted as 90% or as 27%, and how both numbers are correct in their appropriate contexts. It seemed that the OP's confusion stemmed in part from not understanding this; they assumed 90% simply means 90% overall probability, period.
Nov
28
awarded  Nice Answer
Nov
27
revised Finding the limit of an exponential term minus a polynomial term
improve formatting and tags
Nov
27
suggested approved edit on Finding the limit of an exponential term minus a polynomial term