Question

Prove there are no 3 collinear points on a non-degenerate conic

score 656 · Answer 1 · 2026-04-15 11:46:55

656

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Prove there are no 3 collinear points on a non-degenerate conic

Published on 15 Apr 2026 - 11:46

score 108 · Answer 2 · 2026-05-10 16:11:33

108

Views

Partitioning out a part of a rectangular matrix that is not affected by a projection

Published on 10 May 2026 - 16:11

score 382 · Answer 3 · 2026-04-13 19:07:33

382

Views

prove $\det(adj{A})=\det(A)$ for any $A\in{M}_{n\times{n}}$

Published on 13 Apr 2026 - 19:07

score 70 · Answer 4 · 2026-04-12 04:00:48

70

Views

dimension of a fiber

Published on 12 Apr 2026 - 4:00

score 1k · Answer 5 · 2026-05-15 22:11:09

1k

Views

What is the Perron-Frobenius theorem for non-negative matrices?

Published on 15 May 2026 - 22:11

score 1.9k · Answer 6 · 2026-04-14 12:22:06

1.9k

Views

What is a matrix with non-zero values exist at main diagonal and the diagonal above/below called

Published on 14 Apr 2026 - 12:22

score 99 · Answer 7 · 2026-04-16 05:54:01

99

Views

give restriction on $n$-th degree polynomial $p(x)$ such that its derivatives form a basis of a polynomial vector space.

Published on 16 Apr 2026 - 5:54

score 56 · Answer 8 · 2026-04-13 21:52:40

56

Views

Linear map and linear subspace exercise

Published on 13 Apr 2026 - 21:52

score 89 · Answer 9 · 2026-05-11 07:22:45

89

Views

What new geometric information about a matrix does eigendecomposition of the matrix tells us?

Published on 11 May 2026 - 7:22

score 797 · Answer 10 · 2026-05-11 07:38:37

797

Views

Is $\mathrm {rank}\ (AA^*A)= \mathrm {rank}\ (A)$?

Published on 11 May 2026 - 7:38

score 239 · Answer 11 · 2026-05-10 08:20:58

239

Views

Diagonalizable of $A=A^T$

Published on 10 May 2026 - 8:20

score 466 · Answer 12 · 2026-05-16 00:28:11

466

Views

Eigenvectors to the largest eigenvalue $\lambda_1$ of $A\geq 0$ are non-zero only at the end of the longest chains when $\lambda_1=0$?

Published on 16 May 2026 - 0:28

score 392 · Answer 13 · 2026-05-11 06:19:12

392

Views

Find the dimension of the Eigen-space corresponding to the Eigen value $ \ \lambda \ $ with respect to $ \ \vec v \ $

Published on 11 May 2026 - 6:19

score 207 · Answer 14 · 2026-04-15 07:32:24

207

Views

Write the transformation as a map $ \ T:\mathbb{R}^3 \to \mathbb{R}^3 \ $

Published on 15 Apr 2026 - 7:32

score 428 · Answer 15 · 2026-05-14 19:36:36

428

Views

Solve $(ST-\lambda I)x=b$ in $O(n^2)$ for upper triangular $S,T$

Published on 14 May 2026 - 19:36

List Question

Prove there are no 3 collinear points on a non-degenerate conic

Partitioning out a part of a rectangular matrix that is not affected by a projection

prove $\det(adj{A})=\det(A)$ for any $A\in{M}_{n\times{n}}$

dimension of a fiber

What is the Perron-Frobenius theorem for non-negative matrices?

What is a matrix with non-zero values exist at main diagonal and the diagonal above/below called

give restriction on $n$-th degree polynomial $p(x)$ such that its derivatives form a basis of a polynomial vector space.

Linear map and linear subspace exercise

What new geometric information about a matrix does eigendecomposition of the matrix tells us?

Is $\mathrm {rank}\ (AA^*A)= \mathrm {rank}\ (A)$?

Diagonalizable of $A=A^T$

Eigenvectors to the largest eigenvalue $\lambda_1$ of $A\geq 0$ are non-zero only at the end of the longest chains when $\lambda_1=0$?

Find the dimension of the Eigen-space corresponding to the Eigen value $ \ \lambda \ $ with respect to $ \ \vec v \ $

Write the transformation as a map $ \ T:\mathbb{R}^3 \to \mathbb{R}^3 \ $

Solve $(ST-\lambda I)x=b$ in $O(n^2)$ for upper triangular $S,T$

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