Stack Exchange

Dan Staley

top accounts reputation activity favorites subscriptions
Top Questions
Top Answers
76
In (relatively) simple words: What is an inverse limit?
math.stackexchange.com

54
I found that the company I work for is putting a backdoor into mobile phones
security.stackexchange.com

19
Showing that a zigzag space is contractible
math.stackexchange.com

18
Unusual mathematical terms
math.stackexchange.com

16
Is it possible to cover $\{1,2,…,100\}$ with $20$ geometric progressions?
math.stackexchange.com

15
Do trivial homology groups imply contractibility of a compact polyhedron?
math.stackexchange.com

14
What is the relevance of Norway in the stories about The Avengers?
scifi.stackexchange.com

13
Nowhere dense subsets of $[0,1]$ with positive measure other than fat Cantor sets
math.stackexchange.com

13
Applications of ultrafilters
math.stackexchange.com

12
A seeming paradox in a coin-flipping game
math.stackexchange.com

12
Do 4 consecutive primes always form a polygon?
math.stackexchange.com

12
Why did the Cylons decide to occupy the human settlement?
scifi.stackexchange.com

11
What differences are between $\mathbb{E}^n$ and $\mathbb{R}^n$
math.stackexchange.com

11
Can Infinity Stones be retrieved more than once?
movies.stackexchange.com

10
Can a Set Have Infinitely-Many Non-Homeomorphic Topologies?
math.stackexchange.com

10
Is there a non-contractible Simplicial Complex with Euler Characteristic 1?
math.stackexchange.com

9
Law of Large Numbers, a confusion
math.stackexchange.com

9
Why is $\infty^0$ indeterminate?
math.stackexchange.com

9
Why are vector spaces not isomorphic to their duals?
math.stackexchange.com

8
Is every contractible space a cone?
math.stackexchange.com

8
What are the subobjects of a manifold?
math.stackexchange.com

8
Sum of Consecutive Perfect Squares
math.stackexchange.com

7
Whats the point of the Expert Practice AI
gaming.stackexchange.com

7
Is the fundamental group of a compact manifold finitely presented?
math.stackexchange.com

7
Completion of the real numbers
math.stackexchange.com

7
Extension of a group homomorphism
math.stackexchange.com

6
A polyomino puzzle
math.stackexchange.com

6
Let $A$ be an $m\times n$ matrix. If $\forall \vec{x}\in\mathbb{R}^{n},\ A\vec{x}=\vec{0}$, show that $A$ is the zero matrix.
math.stackexchange.com

6
Is it true that every positive integer is the sum of 18 fourth powers of integers? (No, but i don't understand given answer)
math.stackexchange.com

6
A counterexample in topology
math.stackexchange.com

1 2