\lllThe \lll symbol is used to denote that one quantity is much less than another. It is a relation symbol that is often used in mathematical expressions to indicate a strong inequality, where the left-hand side is significantly smaller than the right-hand side.
Indicates that 'a' is much less than 'b'.
a \lll bShows that x squared is much less than x cubed for large values of x.
x^2 \lll x^3Used in limits or approximations to indicate that epsilon is much smaller than 1.
\epsilon \lll 1