How a 2D square matrix relates computing signs?
A small horizontal line and an equal length vertical line are basic elements of a 2D square matrix. Their ends merge at ‘a left top corner point’. A 10×10 matrix of “said elements” is 2D square matrix 0…9! A page read ‘row and column’ positions have before-units 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 which are conditions/numbers! Column numbers are “before-units” and row numbers are “before-tens”. Each merged row-column position numbers are 00, 01, 02 …97, 98, and 99. Each one of said position numbers also relates “before squares” of a concerned matrix position! Technically before-units-counting is realized by a zero-start! A before-unit is represented by small “horizontal line”. Subtraction leads to a before position. Said sensible relations are resembled by a logical minus (-) sign! 2D-square matrix and five other computing signs*** maintains similar meaningful logic.