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bio website mathoverflow.net/users/13832/…
location Chicago, IL
age 20
visits member for 3 years, 9 months
seen Nov 4 at 6:15

Third year mathematics major at the University of Chicago, currently on leave. My research interest is billiards on polygons. You can contact me about mathematics at acbecker@uchicago.edu. For moderation issues, you will generally get a faster response by raising a flag on this site.


May
7
answered Precise meaning of “Solution in radicals”
May
7
comment Precise meaning of “Solution in radicals”
Do you know what a field extension is?
May
6
comment Is this an ideal of $\Bbb Z \times \Bbb Z$
You can write $a2n=2na$ and $b3m=3mb$ if that's what you're asking.
May
6
comment Is this an ideal of $\Bbb Z \times \Bbb Z$
$\mathbb Z\times \mathbb Z$ is most definitely commutative.
May
6
revised poisson distribution to get pdf
rolled back to a previous revision
May
6
reviewed Approve Strange graph problem
May
5
comment How do you minimize “hinge-loss”?
If you mean $\max(0,1-yf(x))$, then yes.
May
5
comment How do you minimize “hinge-loss”?
For example, the yellow line represents the hinge loss function you see in every image in a Google search for "hinge loss". None of those lines are yellow...
May
5
comment Map preserving intervals but discontinuous
@GillesBonnet Either is fine (although your current title should read "then", not "than")
May
5
revised Map preserving intervals but discontinuous
added 3 characters in body
May
5
comment Map preserving intervals but discontinuous
@themaker You're right, I made a typo. Should be right now.
May
5
comment Map preserving intervals but discontinuous
@GillesBonnet What I noticed was that your property is very much like the Intermediate Value Property, and this function is famously discontinuous but satisfies IVP.
May
5
comment Map preserving intervals but discontinuous
This property is stronger than being a closed map however.
May
5
comment Map preserving intervals but discontinuous
@rschwieb It is useful to note that closed intervals are precisely the compact connected subsets of $\mathbb R$.
May
5
answered Map preserving intervals but discontinuous
May
5
revised Integral $\int_0^{\pi/4} \frac{\ln \tan x}{\cos 2x} dx=-\frac{\pi^2}{8}.$
distracting QED removed
May
5
comment $\mathbb{R}$ and $\mathbb{R}\setminus \{0\}$ are not isomorphic as linear orders.
@AsafKaragila Makes sense, I agree.
May
5
revised $\mathbb{R}$ and $\mathbb{R}\setminus \{0\}$ are not isomorphic as linear orders.
edited tags
May
5
comment Is $0.1010010001000010000010000001 \ldots$ transcendental?
IIRC this is a challenge problem in Tools of the Trade by Paul Sally. I remember finding some reference a few years ago (after Sally assigned it to me among a list of problems) to this being open.
May
5
comment Suppose f(x) is an odd function. Prove that g(x) = |f(x)| is an even function.
What is $g(-x)$?