Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [Y] [Z] U.S. Coast Guard Ulam, Stanislas Unbalanced assignment problem Unbalanced transportation problem 2nd Unbounded problem (in linear programming) Unconditional probability Unconstrained optimization Undefined service times Uniform distribution 2nd Universal product code (UPC) UPS Utiles Utility Utilization factor |