User Alex - Mathematics Stack Exchange

7 votes

1 answer

1k views

Fundamental Theorem of Linear Algebra over Complex Field

asked Sep 30, 2015 at 22:19

4 votes

3 answers

3k views

What is an example of a field, that is not a sigma-field?

asked Aug 22, 2016 at 19:39

3 votes

2 answers

3k views

Complex multiplication as rotation

asked Nov 28, 2015 at 13:46

2 votes

1 answer

2k views

Proof that Normal Distribution is Normalized

asked Dec 13, 2015 at 16:32

2 votes

3 answers

232 views

Condition where orthogonal rows imply orthogonal columns.

asked Jun 11, 2016 at 22:56

2 votes

2 answers

76 views

functions satisfying Vandermonde identity

asked Nov 3, 2021 at 8:18

1 vote

0 answers

34 views

Derivation of least squares solution in case of overdetermined, square, and underdetermined.

asked Sep 27, 2022 at 20:12

1 vote

3 answers

60 views

Fibonacci golden ratio question without assuming convergence a priori

asked Oct 12, 2021 at 4:38

0 votes

2 answers

63 views

Prove cardinality of R2 without creating a map to R1

asked Apr 3 at 5:17

0 votes

2 answers

57 views

Are there any theorems that use the uncountability of the reals in their proof?

asked Apr 28 at 2:47

0 votes

1 answer

480 views

Linear transformation dimensions of domain and range

asked Jun 14, 2016 at 22:20

0 votes

1 answer

235 views

Properties of the correlation of a rank deficient matrix.

asked Aug 8, 2016 at 13:35

0 votes

1 answer

273 views

Non-Negative Matrix Factorization Constraints

asked Aug 9, 2016 at 20:23

0 votes

1 answer

330 views

Property of Rational Numbers

asked Nov 3, 2016 at 17:17

0 votes

2 answers

238 views

Does the argmax of $x^{1/x} = e$, and why?

asked Apr 5, 2018 at 3:50

0 votes

3 answers

374 views

Does expectation of max - expectation of min always equal expectation of max - min?

asked Mar 9, 2020 at 16:16

0 votes

1 answer

87 views

large factored number addition

asked Aug 29, 2020 at 2:10

-2 votes

1 answer

154 views

Shortest Manhattan distance from point to line

asked Jun 22, 2023 at 19:56

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18 Questions

Fundamental Theorem of Linear Algebra over Complex Field

What is an example of a field, that is not a sigma-field?

Complex multiplication as rotation

Proof that Normal Distribution is Normalized

Condition where orthogonal rows imply orthogonal columns.

functions satisfying Vandermonde identity

Derivation of least squares solution in case of overdetermined, square, and underdetermined.

Fibonacci golden ratio question without assuming convergence a priori

Prove cardinality of R2 without creating a map to R1

Are there any theorems that use the uncountability of the reals in their proof?

Linear transformation dimensions of domain and range

Properties of the correlation of a rank deficient matrix.

Non-Negative Matrix Factorization Constraints

Property of Rational Numbers

Does the argmax of $x^{1/x} = e$, and why?

Does expectation of max - expectation of min always equal expectation of max - min?

large factored number addition

Shortest Manhattan distance from point to line