Mathematics
Meta user
Network profile
6,058
reputation
19
33

user43208

Apparently, this user prefers to keep an air of mystery about them.

163
answers
3
questions
~104k
people reached
  • Member for 6 years, 10 months
  • 1,014 profile views
  • Last seen 3 hours ago

Communities (11)

Top network posts

Top tags (147)

Score 91
Posts 23
Posts % 14
Score 64
Posts 22
Score 34
Posts 22
Score 26
Posts 10
Score 24
Posts 7
Score 23
Posts 8
View all tags →

Top posts (166) All Questions Answers | Votes Newest

44 Proof that $123456789098765432111$ is prime? Sep 13 '13
29 What is $\gcd(0,0)$? Sep 16 '13
23 What is the opposite category of $Set$? Jan 31 '15
20 Under what conditions the quotient space of a manifold is a manifold? Sep 17 '13
15 Can you equip every vector space with a Hilbert space structure? Jan 10 '15
15 For any given set of 13 distinct real numbers, prove we can always find two numbers $x$ and $y$ that $0<\frac{x-y}{1+xy}\leq 2-\sqrt{3}$. Oct 18 '13
14 Logically speaking, why can variables be substituted? Oct 19 '13
14 Proving it doesn't exist a homeomorphism between $\mathbb R$ and $\mathbb R^n$, $n>1$. Oct 11 '13
12 group of units in a topological ring Aug 11 '15
9 Algebraic numbers that cannot be expressed using integers and elementary functions Oct 14 '13
View all questions and answers →

Badges (52)

Gold

—

Silver

19

Rarest

Bronze

33

Rarest

View all badges →