A hierarchy of formulas in set theory/
Levy, Azriel.
A hierarchy of formulas in set theory/ by Azriel Lévy. - Providence, R.I.: American Mathematical Society, 1965. - 76 p.: 26 cm. - Memoirs of the American Mathematical Society; no. 57 .
Cover title.
Bibliography: p. 74-76.
Set theory.
A hierarchy of formulas in set theory/ by Azriel Lévy. - Providence, R.I.: American Mathematical Society, 1965. - 76 p.: 26 cm. - Memoirs of the American Mathematical Society; no. 57 .
Cover title.
Bibliography: p. 74-76.
Set theory.