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Mark
  • Member for 13 years, 1 month
  • Last seen more than 1 year ago
8 votes
1 answer
110k views

Calculate p value

19 votes
7 answers
53k views

How to prove $\log n < n$?

10 votes
3 answers
16k views

Are the graphs with no vertex and 1 vertex bipartite?

10 votes
5 answers
15k views

how to determine if two graphs are not isomorphic

14 votes
3 answers
12k views

How to show $p_n$ $\leq$ $2^{2^n}$?

6 votes
2 answers
9k views

countably infinite union of countably infinite sets is countable

3 votes
2 answers
8k views

Using halting problem to prove undecidable problems

4 votes
4 answers
7k views

What is a rigorous way to prove that this graph is non-planar?

2 votes
2 answers
6k views

Finding all Sylow $p$-subgroups of $A_5$

17 votes
3 answers
6k views

Prove Gödel's incompleteness theorem using halting problem

38 votes
2 answers
6k views

Motivation and use for category theory?

2 votes
1 answer
6k views

Need to understand question about not-a-knot spline

3 votes
2 answers
5k views

How to find the maximum-weight matching

7 votes
2 answers
4k views

Game about placing pennies on table

3 votes
2 answers
4k views

Prove planar embedding has a vertex of degree at most 3 or a face of degree 3

0 votes
1 answer
3k views

Could this algorithm detect shortest cycle in a direct graph?

3 votes
2 answers
2k views

Fast algorithm for LU factorization

6 votes
3 answers
2k views

If $|G| = pq$, then $G$ has an element of order $q$

8 votes
4 answers
2k views

group of order 28 is not simple

2 votes
1 answer
2k views

How many elements of order 6 are in $S_5$?

3 votes
2 answers
2k views

Proving insertion sort using induction

2 votes
1 answer
1k views

Question about maximally consistent sets in logic

3 votes
2 answers
1k views

Algorithm for bipartite graph

2 votes
2 answers
1k views

Suppose $|G| = 2pq$. Does $G$ have a subgroup of order $pq$?

6 votes
1 answer
1k views

Average area of choosing three points on a surface?

1 vote
2 answers
1k views

does this complete directed graph have this property?

5 votes
4 answers
1k views

Alternative definition for topological spaces?

7 votes
3 answers
1k views

Difficult? Bipartite Graph problem

2 votes
2 answers
923 views

Consider a sequence of $N$ positive integers with some property

5 votes
2 answers
908 views

what are the normal subgroups of the group $S_3 \times S_3$?