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11 votes
2 answers
6k views

Are eigen spaces orthogonal?

8 votes
3 answers
2k views

What does actually probability mean?

8 votes
8 answers
2k views

What real numbers do algebraic numbers cover?

7 votes
2 answers
176 views

For what values of $n$ is $n(n+2)$ a triangle number?

5 votes
2 answers
6k views

Can a constant be considered as 1x1 matrix?

5 votes
3 answers
3k views

Are the coefficients of a vector according to a basis unique?

5 votes
1 answer
905 views

How to extended a unitary operator to a larger space?

4 votes
2 answers
7k views

When a pole lies outside the circle of integration, what does Cauchy integral formula state?

4 votes
1 answer
174 views

What background is needed to study quantum game theory?

4 votes
2 answers
1k views

What is the relationship between dimension of eigen space and multiplity of eigen value?

4 votes
1 answer
75 views

Question about oblique co-ordinate system

4 votes
2 answers
4k views

Correct way to learn number theory?

4 votes
1 answer
47 views

Soundness multiple definitions

3 votes
0 answers
48 views

Soundness for first order

3 votes
1 answer
147 views

Inductive proof for Bauer's theorem

3 votes
1 answer
110 views

How to count the number of solutions for this expression modulo a prime number $p$?

3 votes
1 answer
92 views

How to prove the following inequality $|\prod_{i=1}^{i=n}a_i-\prod_{i=1}^{i=n}b_i| < n\delta$?

3 votes
2 answers
1k views

Is there some sort of relationship between SVD decomposition and diagonalizability?

3 votes
1 answer
111 views

Finding Determinant efficiently of specific kind of matrix

2 votes
3 answers
880 views

Can two pythagoras triplet have a common number

2 votes
1 answer
140 views

How do I prove that $\lim_\sigma \int_{-\sigma}^{\sigma}\frac{\sin(\sigma x)}{\pi x}\,dx =1$?

2 votes
1 answer
2k views

What does norm of a matrix mean?

2 votes
1 answer
3k views

What is Weyl-Minkowski theorem?

2 votes
1 answer
476 views

How to see transformations on polytopes?

2 votes
3 answers
3k views

Does the set of natural numbers contain infinity? [duplicate]

2 votes
2 answers
66 views

Property of fractions

2 votes
1 answer
170 views

Geometric proof for properties of Farey sequence

2 votes
1 answer
802 views

Approximation of irrational numbers by rationals

2 votes
1 answer
122 views

Congruence involving prime numbers

2 votes
1 answer
54 views

Statement regarding primes $ \le n$