comparisons and boolean logic

Values can be compared for equality using the == operator:

>> 3 == 3
True 

>> 3 == 4
False

The special symbols True and False are used to denote truth values. Naturally, there are inequality comparisons as well:

>> 3 > 4
False

Truth values can be negated using ! (logical not) and combined using && (logical and) and || (logical or):

>> !True
False

>> !False
True

>> 3 < 4 && 6 > 5
True

&& has higher precedence than ||, i.e. it binds stronger:

>> True && True || False && False
True

>> True && (True || False) && False
False

comparisons and boolean logic - axkr/symja_android_library GitHub Wiki