I agree that you should give us the context.
I agree that you should give us the context.
However, I will tell that I have seen the symbol used for the greatest integer function.
But remember that is only a guess.
my teacher said that this means the value of [x] is the largest integer that is less than or equal to x, so pka's guess is correct, thank you both for your timeYou should really tell us the context in which they are used.