14,903 reputation
12975
bio website linkedin.com/in/crntaylor
location London, United Kingdom
age 30
visits member for 3 years, 4 months
seen 2 mins ago

I'm broadly interested in very applied math. I try to apply ideas from mathematics, statistics, machine learning, formal systems and computer science to solve real-world problems. Mostly in applied finance/quantitative trading, but in other areas if the mood takes me.


The following is for my own use, but feel free to borrow it -

Hi. It looks like you are new here. We are generally very willing to help, but we like users to show the work that they've done towards solving the problem on their own first. If you can edit your question to show the code you've written so far, and where you are stuck, then you will get a much better response.


Jan
23
reviewed Approve suggested edit on Derivative of sqrt( Vector * Matrix * Vector ) according to one coordonate of the vector
Jan
23
answered Derivative of sqrt( Vector * Matrix * Vector ) according to one coordonate of the vector
Jan
15
awarded  Enlightened
Jan
15
awarded  Nice Answer
Jan
15
comment Why isn't $\int\sin(ix)~dx$ equal to $i\cos(ix)+C$ ?
@Lucian The law in the land of Mathematics is "unequal until proven equal" ;)
Jan
15
answered Why isn't $\int\sin(ix)~dx$ equal to $i\cos(ix)+C$ ?
Jan
14
comment Rational probabilities
@Did Oh, I misunderstood! I Assumed you were giving a reason that my example couldn't be a measurable space, and somehow twisted your words to mean something they didn't.
Jan
14
comment Rational probabilities
@Did Interesting - in what way does $2^\mathbb{N}$ fail to be a sigma algebra?
Jan
14
comment Rational probabilities
Interesting. I had initially written "consider only countable sample spaces" but decided to remove it to make the question more general. Any reason not to use a measure taking values on $\mathbb{Q}$ if you have a countable sample space (the sigma algebra could still be uncountable, I think, eg if $\Omega=\mathbb{N}$ and $F=2^\mathbb{N}$)
Jan
14
asked Rational probabilities
Jan
10
awarded  Good Answer
Jan
10
comment How to compute the output of floating numbers?
No problem - it's good to have you here at Math Stack Exchange!
Jan
10
revised How to compute the output of floating numbers?
added 16 characters in body
Jan
10
revised Explain cosmic distances to a child
added 218 characters in body
Jan
10
revised Explain cosmic distances to a child
added 218 characters in body
Jan
10
comment Explain cosmic distances to a child
@Ethan Indeed. Or about 350 blocks in New York City.
Jan
10
answered Explain cosmic distances to a child
Jan
9
comment Are there more even numbers than odd numbers?
@Jordy This next bit, you'll have to imagine me saying in a stage whisper. Here it is: mathematicians have come up with a way of treating $\infty$ as a number! Shh, don't tell anyone. If you want the secrets, you'll have to learn a bit more math, and then go and read about transfinite ordinals. The smallest infinite ordinal is normally written $\omega$. Confusingly, $1+\omega=\omega$, but $\omega+1>\omega$.
Jan
9
comment Are there more even numbers than odd numbers?
@Jordy The mistake was in thinking that $\infty$ is a number, and that $\infty+1$ is an expression that makes sense. It's easy to see that $\infty$ isn't a number, for here is a list of all the numbers: $\{0,1,2,3,4,\dots\}$. Where is $\infty$ in that list? You can't say "at the end", because the list doesn't have an end! (You also can't say "it's the ninth element in the list, but it's fallen over.")
Jan
9
answered Are there more even numbers than odd numbers?