1,697 reputation
21525
bio website
location Melbourne, Australia
age
visits member for 4 years, 1 month
seen Jul 4 at 23:58

Jul
20
awarded  Yearling
Jul
2
awarded  Curious
May
19
awarded  Famous Question
Apr
29
awarded  Popular Question
Apr
9
awarded  Notable Question
Mar
30
awarded  Notable Question
Jan
8
comment What's the explanation for why n^2+1 is never divisible by 3?
I like the first three paragraphs, although I'd start the first with "For any integer $n$,". Why not conclude with "Thus, for any value of $n$, either $n^2$ or $n^2 - 1$ is a multiple of three, so the next multiple of three above $n^2$ is either $n^2+2$ or $n^2+3$."?
Dec
12
comment Are there any interesting semigroups that aren't monoids?
Although this answers the question in the title, it seems to ignore the second paragraph where I try to tighten what is meant by the question.
Sep
24
awarded  Famous Question
Sep
11
awarded  Popular Question
Jul
29
awarded  Notable Question
Jul
20
awarded  Yearling
May
20
awarded  Good Question
Mar
15
awarded  Nice Question
Dec
1
comment Why is the volume of a cone one third of the volume of a cylinder?
Yes, it's not clear what the "so forth" means -- what is the fourth dimensional counterpart?
Nov
29
awarded  Popular Question
Nov
25
awarded  Nice Answer
Oct
26
awarded  Popular Question
Oct
17
awarded  Notable Question
Oct
4
awarded  Popular Question