IS SPACE AN ABSTRACT CONCEPT OR MATERIAL REALITY?
A critical analysis is presented of various variants of the substantial and relational concepts of space and time. Our own concept of space, called abstract-mathematical or relational in a broad sense, is proposed. In accordance with this concept, all other adequate, in our opinion, ones, including empirical and geometric, are consciously or intuitively «tied» to a certain set, between the elements of which some relations are prescribed, for example metric ones. A conclusion is made and substantiated that any interpretation of space as some material or non-material deformable medium is physically inadequate.