“…Absolutely continuous variational measures characterize primitives of conditionally convergent integrals (see, for example, [3,4,6,7,8,9,14,15,17,18,27,28,31,33,36,37,38,39,40,45,48,49]). At the same time, σ-finiteness of a variational measure gives some information about differentiability properties of the set function that determines this measure (see [2,4,6,7,10,13,21,24,32,35,36,40,41,42,44,49]). It is also well-known that, unlike general situation, the absolute continuity of a variational measure implies its σ-finiteness (see [3,4,6,7,9,12,14,15,17,19,…”