Art of Computer Programming, The: Volume 3: Sorting and Searching, 2nd Edition

Appendix B. Index to Notations

In the following formulas, letters that are not further qualified have the following significance:

j,k	integer-valued arithmetic expression
m,n	nonnegative integer-valued arithmetic expression
x, y	real-valued arithmetic expression
z	complex-valued arithmetic expression
f	real-valued or complex-valued function
P	pointer-valued expression (either Λ or a computer address)
S, T	set or multiset
α,β	strings of symbols

Formal symbolism	Meaning	Where defined
V ← E	give variable V the value of expression E	1.1
U↔V	interchange the values of variables U and V	1.1
An or A[n]	the nth element of linear array A	1.1
Amn or A[m,n]	the element in row m and column n of rectangular array A	1.1 ...