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Robert Soupe
Math aficionado. No formal math education beyond high school.
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Top Questions
37
votes
Did anyone wonder why there was one planet fewer before beaming down to Ceti Alpha V/VI?
star-trek
the-wrath-of-khan
asked Aug 5, 2014 at 2:40
scifi.stackexchange.com
32
votes
Why would the binary language of moisture vaporators be that different from the binary language of other machines or droids?
star-wars
languages
droids
asked Aug 9, 2015 at 17:09
scifi.stackexchange.com
18
votes
Is 39 moves the longest a chess game can go moving only pawns?
recreational-mathematics
asked Jul 2, 2014 at 2:44
math.stackexchange.com
14
votes
When did the writers of Star Trek decide the Federation doesn't use money?
star-trek
money
asked Sep 5, 2016 at 22:52
scifi.stackexchange.com
12
votes
Does the alternating sum of prime reciprocals converge?
sequences-and-series
prime-numbers
asked Jun 18, 2017 at 23:16
math.stackexchange.com
9
votes
What is the worst case for the Euclidean algorithm in $\mathbb Z[i]$?
algebraic-number-theory
euclidean-algorithm
asked Oct 14, 2018 at 23:36
math.stackexchange.com
9
votes
What is the most efficient way to replace items in a list at periodic intervals?
list-manipulation
performance-tuning
asked Mar 25, 2016 at 18:08
mathematica.stackexchange.com
7
votes
Under the Gregorian calendar, what days can never be Easter?
soft-question
calendar-computations
asked Apr 5, 2015 at 23:34
math.stackexchange.com
6
votes
Does the $5x + 1$ sequence for 7 reach a power of 2 or does it get stuck in a period?
number-theory
collatz
asked Jul 6, 2015 at 3:30
math.stackexchange.com
5
votes
What would be some winning strategies for a prime factorization lottery?
prime-factorization
asked Jan 13, 2016 at 3:42
math.stackexchange.com
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Top Answers
28
What is Trinity Hall Prime number?
math.stackexchange.com
12
How does passing to ideals solve the problem of unique factorization?
math.stackexchange.com
11
What is the name for a group of five?
music.stackexchange.com
11
What are some other ways to compute the factorials using addition only?
math.stackexchange.com
10
Is the sum of two distinct primes an injective function on integers?
math.stackexchange.com
10
Describe the multiples of $21$ that ends with $241$
math.stackexchange.com
9
Do we have negative prime numbers?
math.stackexchange.com
9
Suppose that both $p$ and $p^2 +2$ are prime numbers. Show that $p=3$.
math.stackexchange.com
9
Factoring rational primes over the Eisenstein integers - when can a prime be written as $j^2+3k^2$?
math.stackexchange.com
9
Ring of algebraic integers as lattice points in the complex plane
math.stackexchange.com
9
Why does the symbol for the multiplication operation change shape?
math.stackexchange.com
8
So what *is* the Euclidean function for $\mathcal{O}_{\mathbb{Q}(\sqrt{69})}$?
math.stackexchange.com
8
What is the Euclidean function for $\mathbb{Z}[\sqrt{14}]$?
math.stackexchange.com
8
What is the Euclidean function for $\mathbb{Z}[\sqrt{14}]$?
math.stackexchange.com
8
$x^2 - (x - 1)$ is prime?
math.stackexchange.com
8
Gaussian prime factorization.
math.stackexchange.com
7
How are large prime numbers found?
math.stackexchange.com
7
Infinite Primes proof with possible error
math.stackexchange.com
7
$\textbf Z[\sqrt{pq}]$ is not a UFD if $\left( \frac{q}p \right) = -1$ and $p \equiv 1 \pmod 4$.
math.stackexchange.com
7
Is there a pattern to the signs of the norms of quadratic fundamental units?
math.stackexchange.com
7
Alternative form of Eisenstein integers
math.stackexchange.com
7
Is there a prime $p$ whose successor is greater than $2p$?
math.stackexchange.com
7
Prove that $\sum^{n-1}_{i=1}i^{(n-1)} \equiv -1$ (mod $n$) for all prime $n\in\mathbb{N}$.
math.stackexchange.com
7
Is $\mathbb{Z}[\sqrt{15}]$ a UFD?
math.stackexchange.com
7
Suppose $p, p+2, p+4$ are prime numbers. Prove that $p = 3$ not using division algorithm.
math.stackexchange.com
7
Is this $\gcd(0, 0) = 0$ a wrong belief in mathematics or it is true by convention?
math.stackexchange.com
7
For which $d \in \mathbb{Z}$ is $\mathbb{Z}[\sqrt{d}]$ a unique factorization domain?
math.stackexchange.com
7
Show that $\mathcal{O}_K$ is not UFD with $K = \mathbb{Q}(\sqrt{-13})$
math.stackexchange.com
7
What is the norm of a number in a cubic integer ring?
math.stackexchange.com
7
Find all primes of the form n^3+1
math.stackexchange.com
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