Abba | search
Click here to view Abba news from 60+ newspapers.
Bookmark or Share- matrices - When will $AB=BA$? - Mathematics Stack ExchangeStack 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 ...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.
- Vector derivative w.r.t its transpose $\\frac{d(Ax)}{d(x^T)}$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 $\\operatorname{Tr}(AB) = \\operatorname{Tr}(BA)$?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
- Vector cross product identity for $(a\\times b)\\cdot(c \\times d)$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.
More
