Takeuti, Gaisi <br/><br/>
The Ordinals of the Systems of Second order Arithmetric With the Provably (delta 1/2) Comprehension Axiom and With the (delta 1/2)    Comprehension Axiom Respectively 
Gaisi Takeuti, Mariko Yasugi 
 - Carnegie - Mellon  Carnegie - Mellon University  1970 
 - 132 p  28 cm 
 - Report  70 - 6 .
<br/><br/> Contine bibliografie  Lucrarea este multigrafiata