What does a matrix with a superscript c mean?
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For example in the statement, $r(A) = r(A^cA)$, where A is an $n times p$ matrix, what does the superscript $c$ mean?
matrices
asked Sep 9 at 7:44
happyspace
6
 |Â
show 3 more comments
up vote
0
down vote
favorite
For example in the statement, $r(A) = r(A^cA)$, where A is an $n times p$ matrix, what does the superscript $c$ mean?
matrices
asked Sep 9 at 7:44
happyspace
6
This is not a standard notation that I know of, so it really ought to be defined in whatever text you're using. Have you looked for it?
– Arthur
Sep 9 at 7:54
It's on an assignment sheet. Naturally, I have looked a lot, and I have checked and double checked my notes and various references etc but haven't come across anything like that with matrices before.
– happyspace
Sep 9 at 7:56
Also, compared to stackoverflow, there seems to be a lot of downvote-happy users here. What gives?
– happyspace
Sep 9 at 7:57
1
I can't read minds, but it's probably because you haven't provided context.
– Arthur
Sep 9 at 8:07
That's because I don't have any context to give... other than it's about matrices. The question literally is "Let $A$ be an $n times p$ matrix with $n geq p$. Show that $r(A^cA) = r(A)$.
– happyspace
Sep 9 at 8:09
 |Â
show 3 more comments
up vote
0
down vote
favorite
up vote
0
down vote
favorite
For example in the statement, $r(A) = r(A^cA)$, where A is an $n times p$ matrix, what does the superscript $c$ mean?
matrices
asked Sep 9 at 7:44
happyspace
6
For example in the statement, $r(A) = r(A^cA)$, where A is an $n times p$ matrix, what does the superscript $c$ mean?
matrices
matrices
asked Sep 9 at 7:44
happyspace
6
asked Sep 9 at 7:44
happyspace
6
asked Sep 9 at 7:44
happyspace
6
asked Sep 9 at 7:44
happyspace
6
asked Sep 9 at 7:44
happyspace
6
6
This is not a standard notation that I know of, so it really ought to be defined in whatever text you're using. Have you looked for it?
– Arthur
Sep 9 at 7:54
It's on an assignment sheet. Naturally, I have looked a lot, and I have checked and double checked my notes and various references etc but haven't come across anything like that with matrices before.
– happyspace
Sep 9 at 7:56
Also, compared to stackoverflow, there seems to be a lot of downvote-happy users here. What gives?
– happyspace
Sep 9 at 7:57
1
I can't read minds, but it's probably because you haven't provided context.
– Arthur
Sep 9 at 8:07
That's because I don't have any context to give... other than it's about matrices. The question literally is "Let $A$ be an $n times p$ matrix with $n geq p$. Show that $r(A^cA) = r(A)$.
– happyspace
Sep 9 at 8:09
 |Â
show 3 more comments
This is not a standard notation that I know of, so it really ought to be defined in whatever text you're using. Have you looked for it?
– Arthur
Sep 9 at 7:54
It's on an assignment sheet. Naturally, I have looked a lot, and I have checked and double checked my notes and various references etc but haven't come across anything like that with matrices before.
– happyspace
Sep 9 at 7:56
Also, compared to stackoverflow, there seems to be a lot of downvote-happy users here. What gives?
– happyspace
Sep 9 at 7:57
1
I can't read minds, but it's probably because you haven't provided context.
– Arthur
Sep 9 at 8:07
That's because I don't have any context to give... other than it's about matrices. The question literally is "Let $A$ be an $n times p$ matrix with $n geq p$. Show that $r(A^cA) = r(A)$.
– happyspace
Sep 9 at 8:09
This is not a standard notation that I know of, so it really ought to be defined in whatever text you're using. Have you looked for it?
– Arthur
Sep 9 at 7:54
This is not a standard notation that I know of, so it really ought to be defined in whatever text you're using. Have you looked for it?
– Arthur
Sep 9 at 7:54
It's on an assignment sheet. Naturally, I have looked a lot, and I have checked and double checked my notes and various references etc but haven't come across anything like that with matrices before.
– happyspace
Sep 9 at 7:56
It's on an assignment sheet. Naturally, I have looked a lot, and I have checked and double checked my notes and various references etc but haven't come across anything like that with matrices before.
– happyspace
Sep 9 at 7:56
Also, compared to stackoverflow, there seems to be a lot of downvote-happy users here. What gives?
– happyspace
Sep 9 at 7:57
Also, compared to stackoverflow, there seems to be a lot of downvote-happy users here. What gives?
– happyspace
Sep 9 at 7:57
1
1
I can't read minds, but it's probably because you haven't provided context.
– Arthur
Sep 9 at 8:07
I can't read minds, but it's probably because you haven't provided context.
– Arthur
Sep 9 at 8:07
That's because I don't have any context to give... other than it's about matrices. The question literally is "Let $A$ be an $n times p$ matrix with $n geq p$. Show that $r(A^cA) = r(A)$.
– happyspace
Sep 9 at 8:09
That's because I don't have any context to give... other than it's about matrices. The question literally is "Let $A$ be an $n times p$ matrix with $n geq p$. Show that $r(A^cA) = r(A)$.
– happyspace
Sep 9 at 8:09
 |Â
show 3 more comments
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This is not a standard notation that I know of, so it really ought to be defined in whatever text you're using. Have you looked for it?
– Arthur
Sep 9 at 7:54
It's on an assignment sheet. Naturally, I have looked a lot, and I have checked and double checked my notes and various references etc but haven't come across anything like that with matrices before.
– happyspace
Sep 9 at 7:56
Also, compared to stackoverflow, there seems to be a lot of downvote-happy users here. What gives?
– happyspace
Sep 9 at 7:57
1
I can't read minds, but it's probably because you haven't provided context.
– Arthur
Sep 9 at 8:07
That's because I don't have any context to give... other than it's about matrices. The question literally is "Let $A$ be an $n times p$ matrix with $n geq p$. Show that $r(A^cA) = r(A)$.
– happyspace
Sep 9 at 8:09