I'm just looking for the correct term to describe a concept:
Suppose I have a 5x5 matrix:
A B C D E F G H I J K L M N O P Q R S T U V W X Y
I can pick any two cells, let's say the cells I and Q, and observe that if I follow the row and column until they "collide," I get two more cells that form the corners of a submatrix. In other words, cells G and S are significant because they are on the same row/column of I and Q.
My question is this: Is there a term for the relationship between G and S in this situation? Anitpodes? Contras? Sisters?