Question

calculate the rank of matrix, the matrix contain don't care value( the don't care value can be any number)?

score 48 · Answer 1 · 2026-03-30 08:57:37

48

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calculate the rank of matrix, the matrix contain don't care value( the don't care value can be any number)?

Published on 30 Mar 2026 - 8:57

score 94 · Answer 2 · 2026-03-26 12:36:35

94

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For any matrices $A$ and $B$ of the same size, show that $\mathrm{Im}(A ,B) = \mathrm{Im}(A) + \mathrm{Im}(B)$.

Published on 26 Mar 2026 - 12:36

score 40 · Answer 3 · 2022-11-24 18:25:25

40

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what is the minimal number of points which are not all simultaneously roots of any element in the span of multivariate polynomials?

Published on 24 Nov 2022 - 18:25

score 101 · Answer 4 · 2022-12-01 12:33:32

101

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What properties do the matrix $A^HA$ have?

Published on 01 Dec 2022 - 12:33

score 609 · Answer 5 · 2022-12-03 08:58:30

609

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Dimension of vector space of matrices

Published on 03 Dec 2022 - 8:58

score 29 · Answer 6 · 2026-04-03 10:18:48

29

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Cardinality of set of the rank of consecutive matrix powers

Published on 03 Apr 2026 - 10:18

score 69 · Answer 7 · 2022-12-04 16:51:29

69

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Rank$(AB) <$ Rank$(B)$ when $A,B,AB$ are nilpotent matrices

Published on 04 Dec 2022 - 16:51

score 117 · Answer 8 · 2022-12-05 07:50:26

117

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Calculating the rank of a particular singular matrix

Published on 05 Dec 2022 - 7:50

score 41 · Answer 9 · 2022-12-06 02:02:48

41

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Number of positive/negative/zero eigenvalues of a block matrix

Published on 06 Dec 2022 - 2:02

score 45 · Answer 10 · 2022-12-06 15:54:29

45

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Doubt in linear algebra Question (CSIR NET 2012)

Published on 06 Dec 2022 - 15:54

score 38 · Answer 11 · 2022-12-07 19:28:43

38

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Sum of matrices formed from orthonormal basis of $\mathbb{R}^{d}$

Published on 07 Dec 2022 - 19:28

score 38 · Answer 12 · 2026-03-31 16:13:44

38

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Rank of a matrix and projection

Published on 31 Mar 2026 - 16:13

score 58 · Answer 13 · 2022-12-16 00:55:26

58

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Invertibility of Difference of Two Rank-One Matrices

Published on 16 Dec 2022 - 0:55

score 463 · Answer 14 · 2022-12-16 06:22:40

463

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If rank(A)=rank(B)=n then show that rank(AB)=n

Published on 16 Dec 2022 - 6:22

score 66 · Answer 15 · 2022-12-21 05:23:43

66

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(Why) is row rank the dimension of the space $V$ minus the dimension of the kernel of $f$?

Published on 21 Dec 2022 - 5:23

List Question

calculate the rank of matrix, the matrix contain don't care value( the don't care value can be any number)?

For any matrices $A$ and $B$ of the same size, show that $\mathrm{Im}(A ,B) = \mathrm{Im}(A) + \mathrm{Im}(B)$.

what is the minimal number of points which are not all simultaneously roots of any element in the span of multivariate polynomials?

What properties do the matrix $A^HA$ have?

Dimension of vector space of matrices

Cardinality of set of the rank of consecutive matrix powers

Rank$(AB) <$ Rank$(B)$ when $A,B,AB$ are nilpotent matrices

Calculating the rank of a particular singular matrix

Number of positive/negative/zero eigenvalues of a block matrix

Doubt in linear algebra Question (CSIR NET 2012)

Sum of matrices formed from orthonormal basis of $\mathbb{R}^{d}$

Rank of a matrix and projection

Invertibility of Difference of Two Rank-One Matrices

If rank(A)=rank(B)=n then show that rank(AB)=n

(Why) is row rank the dimension of the space $V$ minus the dimension of the kernel of $f$?

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