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  2. $A^2=AB+BA$. Prove that $\\det(AB-BA)=0$

    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 …

  3. $AB-BA=I$ having no solutions - Mathematics Stack Exchange

    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 …

  4. How to prove $\\operatorname{Tr}(AB) = \\operatorname{Tr}(BA)$?

    Jan 11, 2015 · 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

  5. matrices - When will $AB=BA$? - Mathematics Stack Exchange

    Aug 29, 2013 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …

  6. Proofs of determinants of block matrices [duplicate]

    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 ...

  7. The commutator of two matrices - Mathematics Stack Exchange

    The commutator [X, Y] of two matrices is defined by the equation $$\begin{align} [X, Y] = XY − YX. \end{align}$$ Two anti-commuting matrices A and B satisfy $$\begin{align} A^2=I \qu...

  8. linear algebra - How to show that $\det(AB) =\det(A) \det(B ...

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  9. linear algebra - Does $\det (A + B) = \det (A) + \det (B)$ hold ...

    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 …

  10. Uncountable vs Countable Infinity - Mathematics Stack Exchange

    My friend and I were discussing infinity and stuff about it and ran into some disagreements regarding countable and uncountable infinity. As far as I understand, the list of all natural …

  11. Show that $ e^{A+B}=e^A e^B$ - Mathematics Stack Exchange

    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 …

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