 Some sources instead call Weber's problem the Fermat–Weber problem, but others use this name for the unweighted geometric median problem.Formally, for a given set of "m" points formula_1 with each formula_2, the geometric median is defined as

Here, arg min means the value of the argument formula_4 which minimizes the sum.In this case, it is the point formula_4 from where the sum of all Euclidean distances to the formula_6's is minimum.