A countably infinite relational structure M is called absolutely ubiquitous if the following holds: whenever N is a countably infinite structure, and M and N have the same isomorphism types of finite induced substructures, there is an isomorphism from M to N. Here a characterisation is given of absolutely ubiquitous structures over languages with finitely many relation symbols. A corresponding result is proved for uncountable structures.

The term "spirituality" now has several interpretations, and the part acquires an excellent, even opposite, meaning in both religious and philosophical doctrines. At the same time, each under the indicated phenomenon understands something of its own. Some authors have in mind historical consciousness, others - the integrity of mental activity, others relate spirituality, first of all with the world of emotions. Undoubtedly, every interpretation of spirituality covers a certain part of the truth. It is worth noting that speaking about spiritual, (...) spirituality and its significance in human being can only be achieved by overcoming the existing bias in the scientific circles and ideological distrust of the very concept of "spirit" and "spiritual." It is not a secret that the spirituality problem was underestimated in the domestic science for a long period, which negatively affected, in particular, the understanding of its content and essence, the treatment of this phenomenon only from the point of view of materialism. From this perspective, the study of S.Prolev, who states that the spiritual exists and manifests itself in various subject forms, whose range is wide - from processes and phenomena of the human psyche to social institutions that provide spiritual production, worthy of attention. Spiritual is understood as a special reality, the "spiritual sphere" of human life. (shrink)

Of the many questions to which the RST has given rise, I should like to single out two groups.