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Don Thousand

Chicago, IL, USA

I'm an undergraduate at the University of Chicago, with a major in Mathematics. I'm also working on a Masters in Computer Science.

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68
Function defined everywhere but continuous nowhere
math.stackexchange.com

17
Find the next number in this sequence
puzzling.stackexchange.com

16
How to solve these $3$ equations for three unknowns $x$,$y$,$z$?
math.stackexchange.com

13
How to solve $\sin^2(x)+\sin2x+2\cos^2(x)=0$
math.stackexchange.com

13
$(x^2+1)(y^2+1)=z^2+1$
math.stackexchange.com

11
$a+b+c+d+e+f=14$ , where $a,b,c,d,e$ and $f$ are whole numbers $\le 4$
math.stackexchange.com

10
Are the sets of a power set considered “elements?”
math.stackexchange.com

10
Has this basic number theory conjecture been discovered or proved before?
math.stackexchange.com

8
Pandas: update column values from another column if criteria
stackoverflow.com

8
Three coins are tossed. If one of them shows a tails, what is the probability that all three coins show tails?
math.stackexchange.com

7
Number Spiral Problem
codegolf.stackexchange.com

7
Gambling snap game
puzzling.stackexchange.com

7
Street Combinatorics - 6 by 7 grid
math.stackexchange.com

7
Prove that there is no non-constant polynomial $P(x)$ such that $P(n)$ is a prime number for all positive integers n
math.stackexchange.com

7
Optimisation without calculus
math.stackexchange.com

6
Is the word coprime?
codegolf.stackexchange.com

6
Number of solutions for a given logical equation
math.stackexchange.com

6
span($v1,v2,v3$) = span($v1,v2$) Why can't the left side be linearly independent?
math.stackexchange.com

6
Can you determine a set of values from a set of sums?
math.stackexchange.com

6
About Utterly odd numbers.
math.stackexchange.com

6
Construct an A4 paper.
math.stackexchange.com

6
Tom & Jerry and True/False Answers Logic Puzzle
math.stackexchange.com

6
For real numbers $x$ and $y$ , find the minimum value of $\sqrt{x^2+y^2}+\sqrt{(x-3)^2+(y-4)^2}$
math.stackexchange.com

5
Normal of a point on the surface of an ellipsoid
math.stackexchange.com

5
Bijective function excluding 0
math.stackexchange.com

5
What is the order of $(\mathbb{Z}/p^n\Bbb{Z})^ \times$?
math.stackexchange.com

5
Solve the system of equations in the set of real numbers.
math.stackexchange.com

5
How to solve the following system of equations?
math.stackexchange.com

5
Proving that a finite simple group (order < 100) is either abelian or has order 60
math.stackexchange.com

5
How to define an Order Preserving Bijection $f$ from rationals to rationals such that $f(0) = 0$ and $f(1) = 1$ that is not the identity function
math.stackexchange.com

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