K distribuci předložek na, v a do u místních jmen v současné češtině

This article deals with the system of distribution of prepositions na, v and do in oikonyms, which is an issue that has not been systematically described in any scientific work yet. At the beginning hypotheses, which I have determined on the basis of literature, are stated; then follows a description of a fieldwork, by which I was trying to verify those hypotheses. The result of this work consists then in a comparison of the obtained data with hypotheses and in a description of the determined system of distribution of investigated prepositions in oikonyms.