This question is also related to English, but I decided to post thread here as it may have different usage in mathematics.
In numbers, when we say the order, we say, 1st, 2nd, 3rd etc. Those "st" and "nd" changes depending on the number.
The question is what is the correct usage when I want to express the line and column in matrix. For example, i-th row and j-th column? Is is correct to use "th" in case?