Substantiation of the difference between the real and intentional being in the ontology of Roman Ingarden

The article is dedicated to the consideration of the thesis about the formal distinction between real and intentional being in the phenomenological ontology of Roman Ingarden. For this purpose in this work it's represented Ingarden's comparative analysis of the "basic form" of real objectivity and the "dual structure" of intentional entity. Also the "formal moments" associated with the constitution of real and intentional objectivities are considered: formal simplicity/complexity, full determinacy/spots of indeterminacy, insularity/openness, completeness/incompleteness. On the basis of this analysis Ingarden concludes that a formal distinction between real and intentional existence confirms the thesis advanced earlier in the framework of existential ontology about the existence between given types of existence also the being difference connected with their existential structure.