Vol'pert A Ya

Publications in Math-Net.Ru

1. The limit of a multi-valued function that is defined on a partially ordered set
   
   Uchenye Zapiski Kazanskogo Universiteta, 129:3 (1969),  76–88
2. Axiomatic definition of hyperbolic functions
   
   Uchenye Zapiski Kazanskogo Universiteta, 129:3 (1969),  65–75
3. A generalization of absolute continuity of a function
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1964, no. 4,  30–38
4. The equivalence of absolute continuity in the narrow sense and the Lipschitz condition for additive set functions
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1963, no. 3,  23–26
5. On homeomorphism of denumerable sets
   
   Mat. Sb. (N.S.), 29(71):3 (1951),  677–698