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samol
  • Member for 10 years, 1 month
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6 votes
1 answer
13k views

What is $(N)+ (N-1) + (N -2) + \cdots + 1$ called?

4 votes
2 answers
9k views

Symbol for the number of elements in a set

4 votes
3 answers
8k views

Does full rank matrix have a null space? [closed]

2 votes
5 answers
6k views

How to calculate the number of connecting lines amongst corners given the number of edges

1 vote
4 answers
142 views

How to calculate the probability of $3$ heads out of $10$ coins IF each coin has a different probability for head

1 vote
4 answers
39 views

How to prove what values of $\beta$ would $f{\left (x,y \right )} = -\beta x y + x^{2} + y^{2}$ is always greater than 0

1 vote
0 answers
97 views

How to formulate non smooth function with an if statement as a linear program?

1 vote
0 answers
110 views

Given a axis aligned rectangle and a triangle. How do tell if they overlap

0 votes
0 answers
46 views

Probability of getting 2nd place given that we know the probability of getting first place

0 votes
1 answer
41 views

How to calculate variance given weights and co-variance matrix

0 votes
1 answer
796 views

What is in the 4x4 transformation matrix used in computer graphics?

0 votes
1 answer
1k views

How to calculate the length orthogonal projection of a point onto a line

0 votes
0 answers
1k views

What does the forward slash mean set notation mean?

0 votes
0 answers
27 views

Analytical solution for adding up this sequence of numbers [duplicate]