[lojban-beginners] A few lojban questions...

["jknilinux@gmail.com" <jknilinux@gmail.com>]

Hi,

I'm new, so, well, I have a few questions related to lojban...

1: According to Alfred Tarski's definition, is lojban semantically closed? 

2: Is there a predicate-logic-oriented introduction to lojban, or at least something that shows exactly how predicate logic is related to lojban? 

I haven't looked at it too much but, for example, where are the quantifiers?

3: Why not use ZFC set theory as a basis for language instead?

4: Finally, is there a one-to-one correlation between letters and sounds, and between spelling and words, and between words and sound? For example, are there two letters that sound the same, like k and c in english, or two words that sound the same or spell the same, like can and can or fish and phish?

Thanks!