
Unusual notation
Posted:
Mar 4, 2011 2:26 AM


Hi,
I came across a notation in the text "Mathematical Analysis" by Malik I can't recall ever seeing. It seems he is defining a function using a symbol which is like a "left corner", i.e. __ , so f(x) = __ where the argument, x, is on top of the underscore. Since I can't write a letter with an underscore here, I'll write f(x) = (__)(x). In neither the appendices or introduction does he appear to define this notation.
This is in a section about sequences (pg 83, to be specific), where Malik is defining the members of a sequence {a_n} as :
a_n = ( __ )(3n) / [(__)(n)]^3 where n is a natural number.
I'd say it was something like a floor function, but this wouldn't make any sense in the context of this problem since all of the quantities he is considering are integers.
Thnaks, Fran

