
Dot product vs Matrix multiplication, is the later a special case of ...
Dot product is defined between two vectors. Matrix product is defined between two matrices. They are different operations between different objects. The connection between the two operations that …
linear algebra - Find a matrix $X\in V$ such that $U\cap W ...
of V =R1×3 V = R 1 × 3. Find a matrix X ∈ V X ∈ V such that U ∩ W = span{X} U ∩ W = span {X}. Here is my problem. I've tried reading other people's related questions, but they're always just slightly …
Determinant of large matrices: it must exist a faster way
May 7, 2017 · WARNING this is a very long report and is likely going to cause boredom. Be warned!! I've heard of the determinant of small matrices, such as: $$\\det \\begin{pmatrix} a&b\\\\ …
What is the usefulness of matrices? - Mathematics Stack Exchange
A matrix is a way to express a linear map between finite-dimensional vector spaces, given a choice of bases for said spaces. Since linear maps are useful, matrices are obviously useful.
What is the Jacobian matrix? - Mathematics Stack Exchange
Dec 20, 2010 · What is the Jacobian matrix? What are its applications? What is its physical and geometrical meaning? Can someone please explain with examples?
What's an intuitive way to think about the determinant?
The first thing to think about if you want an “abstract” definition of the determinant to unify all those others is that it’s not an array of numbers with bars on the side. What we’re really looking for is a …
What does this matrix notation mean $ (A)^\bot$?
It means the orthogonal complement; $ (\text {Col}\,A)^ {\perp}$ is the set of all vectors orthogonal to the column space of $A$.
Generalisation of Jordan decomposition to rectangular matrices
Dec 7, 2023 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation and how do I …
Is a matrix multiplied with its transpose something special?
In my math lectures, we talked about the Gram-Determinant where a matrix times its transpose are multiplied together. Is $A A^\\mathrm T$ something special for any ...
Find a matrix $X∈V$ such that $U∩W=\\mathrm{span}\\{X\\}.$
May 13, 2023 · Probably not how you're supposed to do it... but if you think of these as vectors in R3 R 3, then the span of them is a plane. So, the problem is equivalent to finding the intersection of two …