Axiom:Axioms of Uncertainty/Axiom 7

Axiom
${H_n}$ fulfils the following axiom:
 * $\map {H_{m n} } {\dfrac 1 {m n}, \dfrac 1 {m n}, \dotsc, \dfrac 1 {m n} } = \map {H_m} {\dfrac 1 m, \dfrac 1 m, \dotsc, \dfrac 1 m} + \map {H_n} {\dfrac 1 n, \dfrac 1 n, \dotsc, \dfrac 1 n}$