A quantity 
is said to be less than 
if 
is smaller than 
,
written 
. If 
is less than or equal to 
, the relationship is written 
. In the Wolfram
Language, this is denoted Less[a,
b], or a < b.
If 
is much less
than 
, this is written 
. Statements involving greater
than and less than symbols are called inequalities.
