User Sophie Swett

17 votes

3 answers

422 views

If a square is colored red and blue, must there be either a red path connecting the top and bottom, or a blue path connecting the left and right?

asked Aug 22, 2011 at 1:21

13 votes

2 answers

9k views

If a derivative of a continuous function has a limit, must it agree with that limit? [duplicate]

asked Oct 18, 2013 at 3:56

12 votes

3 answers

761 views

Solving the functional equation $f(x) = f(\frac{x}{\phi}) f(\frac{x}{\phi^2} - 1)$

asked Sep 6, 2012 at 15:03

10 votes

1 answer

778 views

Why isn't the zero ring the field with one element?

asked Jul 14, 2020 at 16:31

9 votes

1 answer

260 views

What can the multiset of zeros of a meromorphic function look like?

asked Jul 23, 2011 at 16:36

6 votes

1 answer

328 views

In linear logic sequent calculus, can $\Gamma \vdash \Delta$ and $\Sigma \vdash \Pi$ be combined to get $\Gamma, \Sigma \vdash \Delta, \Pi$?

asked Jun 12, 2013 at 0:18

5 votes

1 answer

309 views

In NFU, is there a bijection between the set of all sets and the set of all one-element sets?

asked Oct 7, 2012 at 16:24

3 votes

1 answer

774 views

What algorithm can I use to find this ellipse inscribed in a quadrilateral?

asked Jan 9, 2019 at 3:40

3 votes

2 answers

108 views

When gambling, do I get my money's worth? (Or: Does the amount I lose per bet determine the number of bets until I lose all my money?)

asked Feb 21, 2019 at 2:19

3 votes

1 answer

72 views

How can I minimize the real part of the roots of this function involving both $x$ and $e^x$ terms?

asked Mar 23, 2019 at 5:24

3 votes

2 answers

3k views

How many rounds are required in a "Swiss tournament sorting algorithm"?

asked Dec 25, 2016 at 6:34

3 votes

1 answer

166 views

How easy is it to prove that it's safe to adjoin product objects to a category?

asked May 15, 2023 at 4:18

3 votes

7 answers

678 views

Does the word "if" have a different meaning in mathematical writing than in everyday English?

asked Sep 10, 2023 at 2:57

2 votes

0 answers

72 views

Is the symmetric group over 8 items, $S_8$, presented by $\langle x, y \mid x^2 = e, y^8 = e, (xy)^7 = e \rangle$?

asked May 28, 2021 at 21:23

0 votes

1 answer

301 views

Comma categories over contravariant functors

asked Aug 23, 2017 at 18:48

0 votes

1 answer

141 views

Given the Laplace transform of a function $f(t)$, can I find the "total squared error" $\int_0^\infty f(t)^2\ dt$?

asked Apr 1, 2019 at 2:37

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16 Questions

If a square is colored red and blue, must there be either a red path connecting the top and bottom, or a blue path connecting the left and right?

If a derivative of a continuous function has a limit, must it agree with that limit? [duplicate]

Solving the functional equation $f(x) = f(\frac{x}{\phi}) f(\frac{x}{\phi^2} - 1)$

Why isn't the zero ring the field with one element?

What can the multiset of zeros of a meromorphic function look like?

In linear logic sequent calculus, can $\Gamma \vdash \Delta$ and $\Sigma \vdash \Pi$ be combined to get $\Gamma, \Sigma \vdash \Delta, \Pi$?

In NFU, is there a bijection between the set of all sets and the set of all one-element sets?

What algorithm can I use to find this ellipse inscribed in a quadrilateral?

When gambling, do I get my money's worth? (Or: Does the amount I lose per bet determine the number of bets until I lose all my money?)

How can I minimize the real part of the roots of this function involving both $x$ and $e^x$ terms?

How many rounds are required in a "Swiss tournament sorting algorithm"?

How easy is it to prove that it's safe to adjoin product objects to a category?

Does the word "if" have a different meaning in mathematical writing than in everyday English?

Is the symmetric group over 8 items, $S_8$, presented by $\langle x, y \mid x^2 = e, y^8 = e, (xy)^7 = e \rangle$?

Comma categories over contravariant functors

Given the Laplace transform of a function $f(t)$, can I find the "total squared error" $\int_0^\infty f(t)^2\ dt$?