matrices - When will $AB=BA$? - Mathematics Stack Exchange
30 Mar 2025 at 3:04pm
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
computer science - An efficient way to determine if two context free ...
31 Mar 2025 at 11:35am
In some cases, it is relatively easy to prove that two formal grammars are equivalent. If two grammars generate a finite language, then you only need to compare the sets of strings generated by both grammars to prove that they are weakly equivalent.
prove $\\Gamma(a)\\Gamma(b) = \\Gamma(a+b)B(a,b)$ using polar ...
31 Mar 2025 at 6:44pm
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linear algebra - Does $\det (A + B) = \det (A) + \det (B)$ hold ...
31 Mar 2025 at 12:18pm
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
How to prove $\\operatorname{Tr}(AB) = \\operatorname{Tr}(BA)$?
31 Mar 2025 at 10:02am
The efficient @hjhjhj57: answer $$\text{Tr}(AB) = \text{Tr}(BA)= \sum a_{ij} b_{ji}$$ Now we can start to understand why if we do a circular permutation of the factors the expression
linear algebra - How to show that $\det(AB) =\det(A) \det(B ...
31 Mar 2025 at 3:03pm
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Are the eigenvalues of $AB$ equal to the eigenvalues of $BA$?
29 Mar 2025 at 1:32pm
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Proofs of determinants of block matrices [duplicate]
29 Mar 2025 at 11:12pm
I know that there are three important results when taking the Determinants of Block matrices $$\\begin{align}\\det \\begin{bmatrix} A & B \\\\ 0 & D \\end ...
computer science - Find the NFA for the language $\{ w | \text{ w ...
28 Mar 2025 at 2:27am
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
How to show that every Boolean ring is commutative?
30 Mar 2025 at 4:41am
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
WHAT IS THIS? This is an unscreened compilation of results from several search engines. The sites listed are not necessarily recommended by Surfnetkids.com.
30 Mar 2025 at 3:04pm
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
computer science - An efficient way to determine if two context free ...
31 Mar 2025 at 11:35am
In some cases, it is relatively easy to prove that two formal grammars are equivalent. If two grammars generate a finite language, then you only need to compare the sets of strings generated by both grammars to prove that they are weakly equivalent.
prove $\\Gamma(a)\\Gamma(b) = \\Gamma(a+b)B(a,b)$ using polar ...
31 Mar 2025 at 6:44pm
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
linear algebra - Does $\det (A + B) = \det (A) + \det (B)$ hold ...
31 Mar 2025 at 12:18pm
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
How to prove $\\operatorname{Tr}(AB) = \\operatorname{Tr}(BA)$?
31 Mar 2025 at 10:02am
The efficient @hjhjhj57: answer $$\text{Tr}(AB) = \text{Tr}(BA)= \sum a_{ij} b_{ji}$$ Now we can start to understand why if we do a circular permutation of the factors the expression
linear algebra - How to show that $\det(AB) =\det(A) \det(B ...
31 Mar 2025 at 3:03pm
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Are the eigenvalues of $AB$ equal to the eigenvalues of $BA$?
29 Mar 2025 at 1:32pm
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Proofs of determinants of block matrices [duplicate]
29 Mar 2025 at 11:12pm
I know that there are three important results when taking the Determinants of Block matrices $$\\begin{align}\\det \\begin{bmatrix} A & B \\\\ 0 & D \\end ...
computer science - Find the NFA for the language $\{ w | \text{ w ...
28 Mar 2025 at 2:27am
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
How to show that every Boolean ring is commutative?
30 Mar 2025 at 4:41am
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
WHAT IS THIS? This is an unscreened compilation of results from several search engines. The sites listed are not necessarily recommended by Surfnetkids.com.
