≪

Symbol

 * 1)  Much less than.
 * 2)  Less than for every element (of a set).
 * The n-Vector p ≪ q if pi < qi for all i in [1,n].
 * The n-Vector p ≪ q if pi < qi for all i in [1,n].
 * The n-Vector p ≪ q if pi < qi for all i in [1,n].