3,847 reputation
22054
bio website google.com/profiles/walkraft
location Sydney, Australia
age 26
visits member for 4 years
seen Jun 1 at 5:24
  • Bachelor of Science (Adv Maths) with Honors in Computer Science from USYD
  • Programming C/C++/Java/Python/Objective C/C#/Javascript/PHP

Jun
6
revised Failing to guess each card in a deck
added 81 characters in body; deleted 10 characters in body; added 1 characters in body
Jun
6
asked Failing to guess each card in a deck
May
31
awarded  Self-Learner
May
31
accepted What mathematical questions or areas have philosophical implications outside of mathematics?
Apr
20
awarded  Popular Question
Apr
16
awarded  Nice Question
Apr
16
comment Why are differentiable complex functions infinitely differentiable?
Correct, but the derivative of a constant is 0, so the linearity is trivial. It only becomes interesting when we consider the derivative as a transformation from functions to functions
Apr
15
comment Why are differentiable complex functions infinitely differentiable?
Interesting, although the derivative is not a linear transformation from R2->R2, but from f(R2)->f(R2)
Jan
17
awarded  Enlightened
Jan
17
awarded  Nice Answer
Jan
12
asked Do the positions of the initial dots affect the game sprouts?
Dec
18
accepted Why isn't there a uniform probability distribution over the positive real numbers?
Dec
18
revised Probability of picking a random natural number
edited title
Dec
18
asked Why isn't there a uniform probability distribution over the positive real numbers?
Dec
16
awarded  Nice Question
Dec
15
comment Do your friends on average have more friends than you do?
That's a very nice proof. So the core observation is that each edge contributes 2 to the total number of friends, but deg u/deg v+deg v/deg u to the number obtained by adding each person's friend popularity. Also, its worthwhile noting that 2≤x/y+y/x is easily proved using either calculus or the AM-GM inequality, just in case anyone doesn't know that
Dec
15
accepted Do your friends on average have more friends than you do?
Dec
15
comment Do your friends on average have more friends than you do?
@J.M. I have provided an exact graph theory question that should be answerable mathematically. Does sum(t/f)>sum(f) hold for all graphs or is there a counter example?
Dec
15
revised Do your friends on average have more friends than you do?
added 22 characters in body
Dec
15
revised Do your friends on average have more friends than you do?
added 304 characters in body