3,966 reputation
22056
bio website google.com/profiles/walkraft
location Sydney, Australia
age 27
visits member for 4 years, 3 months
seen Aug 31 at 13:52
  • Bachelor of Science (Adv Maths) with Honors in Computer Science from USYD
  • Programming C/C++/Java/Python/Objective C/C#/Javascript/PHP

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
Dec
15
asked Do your friends on average have more friends than you do?
Dec
11
awarded  Quorum
Dec
11
awarded  Convention
Dec
9
awarded  Precognitive
Dec
7
awarded  Nice Question
Dec
3
awarded  Nice Answer
Nov
9
awarded  Taxonomist
Nov
9
revised Finding Moment of Inertia (rotional inertia?) $I$ using integration?
deleted 5 characters in body
Nov
9
revised What's so “natural” about the base of natural logarithms?
added 2 characters in body; deleted 8 characters in body; deleted 2 characters in body
Oct
19
awarded  Suffrage
Oct
14
awarded  Enlightened
Oct
14
awarded  Nice Answer