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Steven Stadnicki

Seattle, WA

Software engineer and long-time dabbler in mathematics; 11th in the Putnams forever ago but I've long since atrophied.
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Top Questions
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128
Does the square or the circle have the greater perimeter? A surprisingly hard problem for high schoolers
math.stackexchange.com

118
In the history of mathematics, has there ever been a mistake?
math.stackexchange.com

106
Can a piece of A4 paper be folded so that it's thick enough to reach the moon?
math.stackexchange.com

93
The Mathematics of Tetris
math.stackexchange.com

74
if there are 5 points on a sphere then 4 of them belong to a half-sphere.
math.stackexchange.com

63
Does newer card text on a Magic: The Gathering card override the old wording?
boardgames.stackexchange.com

60
In calculus, which questions can the naive ask that the learned cannot answer?
math.stackexchange.com

58
Why can ALL quadratic equations be solved by the quadratic formula?
math.stackexchange.com

56
Origin of the dot and cross product?
math.stackexchange.com

55
A (probably trivial) induction problem: $\sum_2^nk^{-2}\lt1$
math.stackexchange.com

48
Koch snowflake paradox: finite area, but infinite perimeter
math.stackexchange.com

43
Are there 300,000 items in the average American household, and 10,000 items in the average European household?
skeptics.stackexchange.com

43
Multiple-choice question about the probability of a random answer to itself being correct
math.stackexchange.com

41
Collecting alternative proofs for the oddity of Catalan
mathoverflow.net

38
What is this pattern called?
math.stackexchange.com

38
How many digits does the integer zero have?
math.stackexchange.com

38
Which is bigger: $9^{9^{9^{9^{9^{9^{9^{9^{9^{9}}}}}}}}}$ or $9!!!!!!!!!$?
math.stackexchange.com

35
Can Mickey Mouse divide by $7$?
math.stackexchange.com

35
How can I write the numbers 5 and 7 as some sequence of operations on three 9s?
math.stackexchange.com

35
Proofs without words
mathoverflow.net

33
Questions on a self-made theorem about polynomials
math.stackexchange.com

33
Proof that $\sin10^\circ$ is irrational
math.stackexchange.com

32
Why can't polynomials have negative exponents or division by a variable
math.stackexchange.com

30
How to force prime numbers into a line?
math.stackexchange.com

29
Is this of any real importance to the mathematical scientific community?
math.stackexchange.com

29
Hole inside cube with tetrahedrons at corners?
math.stackexchange.com

29
If $a^3 b = ba^3$ and if $ a $ has order 7, show that $ab = ba$
math.stackexchange.com

29
Is it true to say that "it's not logically possible to prove something can't be done"?
math.stackexchange.com

28
Why does the Fibonacci Series start with 0, 1?
math.stackexchange.com

28
Why is Bazaar of Baghdad supposedly such a good card?
boardgames.stackexchange.com

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