Plato's Parmenides from a logical point of view

The main subject of my thesis is the so called "Third Man Argument". It is an objection, which appeared already during Plato's life and was raised against Plato's Theory of forms. As a reaction to this argument, Plato wrote the dialogue Parmenides, to formulate it explicitly, together with other objections which attacked his forms that time as well. After study of the dialogue itself follows a part devoted to three different attitudes to the issue of Third Man Argument, namely by G. Vlastos, E. N. Zalta and F.J. Pelletier and at last by M. S. Cohen. On Last pages are mentioned attitudes, which see Forms as universals and sets