Recent content by Joes12

They seem to be the same area of discussion, but I don't think the same question from what I have seen.

I was thinking about the vacuum airship concept that was conceived a long time ago. For example: I think the main problem is the required structural strength of the container, and also being light weight. I have not run any numbers, what do you think the potential issues with the following...

Many thanks

What is the notation to show element-wise square root of a vector or matrix?

I think Iv found the answer. Is it valid to write L(J_n) though? Thanks again

Appologies I think I should have written J instead of I. From what I read, the symbol for the lower triangular matrix is L. If I want the non-zero elements of L to be 1 can I write L(J_n)? Is that valid notation to describe that situation? What I am looking to say with the a part is, take each...

I think I’ve found a way to calculate the A part. Is my notation correct? What I am trying to say is take the lower triangular matrix of the Identity matrix, so that it results in all ones of the lower triangular part. Then multiply this by the diagonal matrix of vector x. Please see attached...

Hi, Please see the attached image. I have a matrix and would like to split it up into a nice compact equation if possible. Matrix A seems to be a nice pattern that would lend itself to writing in equation form but I’m not sure what to do. Is it possible? Also do you know how I could correctly...