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.
