Category "elements"

Why does order of inserts to binary tree matter?

I know that the order does matter when inserting elements into a binary search tree and that elements inserted in different order will lead to different binary

How can I check if a matrix is an element of a list of matrices? in R

I'm pretty new to programming in R. I have a matrix of numbers mat, as well as a list of matrices matlist. I want to check if the matrix mat matches with (i.e