Ashwin Ganesan's user avatar
Ashwin Ganesan's user avatar
Ashwin Ganesan's user avatar
Ashwin Ganesan
  • Member for 9 years, 10 months
  • Last seen more than 1 year ago
12 votes

Finding the centralizer of a permutation

10 votes

What does it mean to say "a divides b"

9 votes
Accepted

Are all Sylow 2-subgroups in $S_4$ isomorphic to $D_4$?

6 votes
Accepted

Number of spanning trees of this graph

6 votes
Accepted

Proving $(\alpha + \beta)^{p^n} = \alpha^{p^n} + \beta^{p^n}$ in a finite field

6 votes
Accepted

Hamming's code is perfect

5 votes

Regular graph with no non-trivial automorphim

5 votes
Accepted

What is the image of the linear mapping ${P} : \mathbb{V}\rightarrow \mathbb{V}$ where $(Pf)(x)= [f(x) + f(-x)]/2$

5 votes

Is there a relationship between the clique of a graph and colouring of a graph?

5 votes
Accepted

Graphs without nontrivial automorphism

4 votes

Prove that if a $k$-regular bipartite graph has a bipartition $(x,y)$ then $\vert x\vert=\vert y \vert$

4 votes
Accepted

Vertex degree and graph isomorphism

4 votes
Accepted

Expository articles on Cayley Graphs?

4 votes

Prove $\sum_{k=0}^{n-2}{n-k \choose 2} = {n+1 \choose 3}$

3 votes

How many ways are there to place nine people in three boats, if in each boat we should place 3 people?

3 votes
Accepted

Determine if matrices A and B are similar

3 votes

Elements of $S_n$ which can not be product of $\leq n-2$ transpositions

3 votes

Confusion about event in a sample space.

3 votes
Accepted

Why do we need "basis" in linear algebra?

3 votes

Any $n \times n$ matrix $A$ can be written as $A = B + C$ with $B$ is symmetric and $C$ skew-symmetric.

3 votes

Gilbert-Varshamov bound

3 votes
Accepted

Disjoint permutations?

3 votes

Given binary codewords find generator matrix

3 votes
Accepted

Finding number of subsets of set S that have r elements in common with set T

3 votes

L(G) is isomorphic to G iff G is a cycle

3 votes
Accepted

Proof: How many edges need be removed from this graph to produce the spanning tree?

3 votes

Maximum number of isomorphic graphs

3 votes

When is $r = r^{2}$ in $\mathbb{Z}/p^{l}\mathbb{Z}$?

3 votes
Accepted

suppose $S$ is a LI subset of a vector space $V$ and $u$ is a vector in $V$ with $u$ not in $Span(S)$. Show $\{v_1,v_2,...,v_n,u\}$ is LI

3 votes
Accepted

Cayley graphs of finite 2-generator groups

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