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Chris Culter
  • Member for 9 years
  • Last seen this week
267 votes
Accepted

Splitting a sandwich and not feeling deceived

53 votes

Polygons with equal area and perimeter but different number of sides?

44 votes
Accepted

Does there exist a system such that the additive identity is non-zero?

43 votes
Accepted

Can the factorial function be written as a sum?

43 votes
Accepted

Why does my textbook say that equation $y = 7-3x$ has infinite number of solutions while it has only one root?

40 votes

What does "curly (curved) less than" sign $\succcurlyeq$ mean?

40 votes

Refining my knowledge of the imaginary number

40 votes

Is an irrational number odd or even?

40 votes
Accepted

Given a convergent series of positive rationals, how many subseries can converge to the same number?

36 votes

If the set of odd numbers is a subset of $\mathbb N$ then surely it is smaller than $\mathbb N$

30 votes
Accepted

Conway's "Murder Weapon"

29 votes

Direct proof of empty set being subset of every set

28 votes

What are the names of numbers in the binary system?

28 votes

Intuition Wanted: Why Define Integrals Component-Wise

28 votes

Is the uniqueness of the additive neutral element sufficient to prove x+z=x implies z=0?

27 votes

Is there a way to denote the calculation $1+2+3+\dots+n$?

26 votes

A new $4$-dimensional number system?

24 votes

Are there any valid continuous Sudoku grids?

24 votes

$\pi$ in terms of $4$?

21 votes
Accepted

Why heat equation is not time-reversible? (Time arrow in mathematics)

19 votes

Why is compactness so important?

18 votes
Accepted

Dedekind-Like construction of p-adic numbers

17 votes
Accepted

What is the Probability that a Knight stays on chessboard after N hops?

17 votes
Accepted

Help with difficult telescoping series question: $\frac3{1!+2!+3!}+\frac4{2!+3!+4!}+\ldots+\frac{2012}{2010!+2011!+2012!}$

16 votes

Are the integers closed under addition... really?

15 votes

Non-end points of Cantor ternary set

15 votes

Visualizing $\textbf{Q}_p$ vs. $\textbf{F}_p((t))$?

14 votes

Trying to visualize the hierarchy of mathematical spaces

13 votes

"Integer average" of two integer numbers

13 votes

Is is possible to obtain exactly 16 black cells?

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