INVESTIGATION BASED ON THE USE OF SEVERAL MODELS AS A GENERAL METHOD OF PHYSICAL MODELING V. V. Kharchenko UDC 53:001.891.57 A refined formulation of a theorem on modeling based on the use of several models is presented. It is shown that investigation based on a single model can be treated as a particular case of the method proposed. Advantages of the method developed over existing modeling based on the use of a single object or phenomenon are considered. JEPTER7492019991 JEPTER749201