[FOM] Axioms of reducibility and infinity

[Francisco Gomes Martins]

  I´m working on Tractatus; Wittgenstein rejects 
the axiom of reducibility (see 
<tel:%286.1232-6.1233>6<tel:%286.1232-6.1233>.1232-6.1233), 
the axiom of infinity (5.535) and even the even 
the set theory (6.031). First, I ´d like to know 
more about those axioms. Second, I´d like to know 
why/how does Wittgenstein reject all of them?

Francisco