NKS's user avatar
NKS's user avatar
NKS's user avatar
NKS
  • Member for 13 years, 3 months
  • Last seen more than 1 year ago
29 votes
Accepted

Real projective space, the quotient map and covering projection

21 votes

What are the interesting applications of hyperbolic geometry?

20 votes

A question about groups: may I substitute a binary operation with a function?

16 votes
Accepted

Showing that the product of all $n$th Roots of Unity is $(-1)^{n+1}$

15 votes

Covering spaces - why are they useful?

15 votes
Accepted

How can I find the number of the shortest paths between two points on a 2D lattice grid?

15 votes
Accepted

Endomorphisms of $V$ and the dual space

12 votes
Accepted

Intersection of subgroups of orders 3 and 5 is the identity

11 votes
Accepted

Parabolic elements correspond to punctures

9 votes
Accepted

What does recursive cosine sequence converge to?

9 votes
Accepted

Term by term differentiation

8 votes

For a polynomial $p(z)$ with real coefficients if $z$ is a solution then so is $\bar{z}$

8 votes

A Math function that draws water droplet shape?

8 votes
Accepted

homotopic maps from the sphere to the sphere

8 votes

Apostol proof divides by zero?

7 votes

If $gh = hg$ in a group and $|g|$ and $|h|$ are finite, is $|gh|$ finite too?

7 votes

What's an intuitive way of looking at quotient spaces?

7 votes

Prove by induction that $n!>2^n$

7 votes
Accepted

For an $n$-dimensional object, how many types of holes are possible?

7 votes

Non-linear function on $\mathbb{R}^2$ preserving the origin and maps lines onto lines?

6 votes
Accepted

Question about induced representations

6 votes

Universal Definition for Pullback

6 votes

If a rectangular grid, where left<->right and top<->bottom wrap, can be mapped onto the surface of a torus, what does a cube map to?

4 votes
Accepted

Intuitive way to find the graph of a derivative?

4 votes

Prove the determinants of these related matrices are zero.

4 votes
Accepted

Separating Out Parts of a Matrix (Translation, Rotation, Scaling)

4 votes

How can there be an element in a group such that $a^2 = e$, but $a \neq e$?

4 votes
Accepted

Visualizing homologous elements

4 votes

Minimal polynomial of $1 + 2^{1/3} + 4^{1/3}$

4 votes

clearing coins from a grid