\succsimThe symbol \succsim is used in mathematics to denote a relation that means 'succeeds or is similar to'. It is often used in order theory and economics to represent a preference relation where one element is either preferred to or considered equivalent to another.
Element x is preferred to or considered equivalent to element y.
x \succsim ySet A is considered at least as good as set B in a preference ordering.
A \succsim BUtility of x is at least as much as utility of y in economic terms.
u(x) \succsim u(y)