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Mar
10
answered Why can a Nim sum be written as powers of 2?
Mar
8
answered What is the condition for the first root of a cubic function to be positive?
Mar
7
answered condition for a cubic to have a repeated root
Jan
17
answered If $x=\pi a y^{1/2}$ then why is $\frac{\partial^n}{\partial x^n}=-2\left(\frac{y^{3/2}}{\pi a}\right)^n \frac{\partial^n}{\partial y^n}$?
Sep
23
answered CGT: value of sum game is sum of values of games
Aug
16
answered Which is greater, $20 \uparrow\uparrow\uparrow\uparrow 20$ or $4 \uparrow\uparrow\uparrow\uparrow\uparrow 4$?
Jul
19
answered A question about limit 22
May
26
answered What is the opposite of a robust system?
May
26
answered How exactly is $i=\sqrt{-1}$ related to $\mathbb{C}$ being a closed algebraic field?
May
26
answered Are there combinatorial games of finite order different from $1$ or $2$?
May
25
answered Interesting sequence question
Mar
31
answered How to properly determine the limits of a triple integral?
Mar
13
answered Terminology: Projection, truncation, elimination
Mar
12
answered mutually exclusive events or not
Mar
12
answered Limit as $x$ approaches 2 is undefined?
Mar
12
answered Is $…000n$ not a natural number?
Mar
12
answered Prove that a polynomial has at least one nonreal complex root
Mar
9
answered Summation notation for time series
Mar
9
answered Player statistics as estimate of surreal number of game
Feb
24
answered My problem in understanding the minimal counterexample technique