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85 votes

Terence Tao–type books in other fields?

real-analysis abstract-algebra complex-analysis reference-request soft-question asked Jul 25, 2019 at 16:30
math.stackexchange.com

80 votes

What is the equation for a 3D line?

geometry 3d solid-geometry asked May 28, 2013 at 3:34
math.stackexchange.com

76 votes

How to treat differentials and infinitesimals?

calculus asked Jan 9, 2014 at 0:27
physics.stackexchange.com

67 votes

Have there been any updates on Mochizuki's proposed proof of the abc conjecture?

ag.algebraic-geometry nt.number-theory arithmetic-geometry abc-conjecture asked Feb 25, 2016 at 4:53
mathoverflow.net

43 votes

"Classroom" math?

soft-question problem-solving asked Mar 3, 2017 at 15:03
math.stackexchange.com

42 votes

In the past did Martin Shkreli offer free medication for those who could not afford it?

medications pharmaceutical asked Jul 19, 2018 at 7:08
skeptics.stackexchange.com

40 votes

How can I answer this Putnam question more rigorously?

calculus proof-writing contest-math asked Jul 28, 2016 at 17:57
math.stackexchange.com

37 votes

Why does Cersei need to repay the Iron Bank right now?

plot-explanation game-of-thrones asked Aug 10, 2017 at 15:23
movies.stackexchange.com

36 votes

Is diamond armor better than traditional armor?

science-based medieval medieval-europe materials armors asked Apr 22, 2016 at 15:59
worldbuilding.stackexchange.com

33 votes

Could we reach the earth's core using today's nuclear arsenal?

science-based reality-check earth geology nuclear asked Jul 4, 2016 at 16:26
worldbuilding.stackexchange.com

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Top Answers
62
Prove that $\sqrt 2 + \sqrt 3$ is irrational
math.stackexchange.com

31
Why can't you flatten a sphere?
math.stackexchange.com

21
The pigeonhole principle(?)
math.stackexchange.com

21
How to introduce my perpetual motion invention to the scientific community?
worldbuilding.stackexchange.com

19
How can I calculate the number of perfect cubes among the first $4000$ positive integers?
math.stackexchange.com

19
What is the equation for a 3D line?
math.stackexchange.com

15
Why is the Absolute value / modulus function used?
math.stackexchange.com

14
Why ReLU function is not differentiable at 0?
math.stackexchange.com

12
How to find the mod of this large number
math.stackexchange.com

12
How is linear algebra used in research?
math.stackexchange.com

11
Find coefficients of polynomial, knowing its roots are consecutive integers
math.stackexchange.com

11
What are the coordinates of red point?
math.stackexchange.com

11
What exactly is circular reasoning?
math.stackexchange.com

10
Is it feasible to have a nomadic space civilization?
worldbuilding.stackexchange.com

9
Can a subsequence repeat a term finitely many times?
math.stackexchange.com

8
Is moving faster than light speed a paradox?
worldbuilding.stackexchange.com

7
why $ 1 - \cos^2x = \sin^2x $?
math.stackexchange.com

7
Logarithmic equation proof
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7
Question about the chain rule.
math.stackexchange.com

6
The probability of scoring a 2 just once when a die is thrown three times?
math.stackexchange.com

6
Non-trivial Polynomial Solution to $P(x)=(P'(x))^2, P(2)=0$?
math.stackexchange.com

6
Is $\sqrt{-(x^2)}$ discontinous on the reals?
math.stackexchange.com

5
Given any seven real numbers, prove that $0 \le \frac{x-y}{1+xy} \le \frac{1}{\sqrt3}$ holds for at least two?
math.stackexchange.com

5
How do I integrate $\int\dfrac{e^x - e^{-x}}{e^x + e^{-x}}\,dx$?
math.stackexchange.com

5
Finding Polynomial Equations for $1^4 + 2^4 + 3^4 + \ldots n^4$
math.stackexchange.com

5
Convergence of $ \sum_{k=1}^{\infty} \frac {3^k}{5^k + 1}$
math.stackexchange.com

5
Give an example of a group G and elements a , b ∈ G such that a^{-1}(ba) ≠ b.
math.stackexchange.com

5
Adding $k^2$ to $1^2 + 2^2 + \cdots + (k - 1)^2$.
math.stackexchange.com

5
How to show $e^x$ and $\ln x$ do not intersect?
math.stackexchange.com

5
Prove: $\log_2(x)+\log_x(y)+\log_y(8)\geq \sqrt[3]{81}$
math.stackexchange.com

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