
Fast(est) and intuitive ways to look at matrix multiplication?
Most of the time I see matrix multiplication presented and defined, as a seemingly arbitrary sequence of operations. For example, the textbook I'm currently reading for a linear algebra course defi...
linear algebra - Dot product vs Matrix multiplication, is the later a ...
Which if we write in matrix form, we need to mathematically take the transpose of a vector and do 'matrix' multiplication to get the above dot product. So coming back full circle to the question - matrix …
linear algebra - Proving Distributivity of Matrix Multiplication ...
Aug 10, 2013 · So, matrix multiplication is just the image of composition of linear transformations under the identification of matrices with linear transformations. In particular, then, distributivity of matrix …
Matrix multiplication notation - Mathematics Stack Exchange
Dec 18, 2016 · Matrix multiplication notation Ask Question Asked 8 years, 11 months ago Modified 4 years, 8 months ago
linear algebra - When is matrix multiplication commutative ...
Multiplication of blocks will give diagonal $\lambda_1\lambda_2$, first off-diagonal $\lambda_1 + \lambda_2$ and second off-diagonal $1$ so assuming scalar multiplication and addition is …
Practical uses of matrix multiplication - Mathematics Stack Exchange
May 28, 2011 · Usually, the use of matrix multiplication is initially given with graphics — scalings, translations, rotations, etc. Then, there are more in-depth examples such as counting the number of …
Fast matrix multiplication for large matrices in Python
Aug 30, 2024 · Is there any way I could increase the speed for this matrix multiplication, like alternative algorithms or Python functions or libraries? I've also tried this by converting the Sympy matrices to …
Why is matrix multiplication associative? - Mathematics Stack Exchange
Mar 16, 2020 · The proof below is a straightforward application of the definition matrix multiplication, and you can probably find it any linear algebra text. The only "trick" would be switching the order …
Intuition behind Matrix Multiplication - Mathematics Stack Exchange
Asking why matrix multiplication isn't just componentwise multiplication is an excellent question: in fact, componentwise multiplication is in some sense the most "natural" generalization of real multiplication …
Proof of number of FLOPs in matrix multiplication [closed]
I cannot find a way to prove it You have an explicit formula (I'm assuming, of course, the naive matrix multiplication algorithm) with additions and multiplications in it, and you have a proposed total of the …