__RE-CORRECTED__7PM EDT, Oct. 6, 2014

I have corrected a typo in "second post on Tarski". In the previously published version, in the sentence

"AND (important!) we add to the axioms the statement, duly formalized, that for all w, if v is a variable and w is z preceded by an existential quantifier (Ev) and z contains no free variables different from v, then {Ref(w,y) = 1

**≡**(Ex) Ref(z,x)} & {(Ref(w,y) = 0

**≡**(Ex)(Ref(z,x)}."

a negation sign in front of the last quantifier was missing and the "=0" and "=1" were a slip of the brain.

This

__should__have read:

"AND (important!) we add to the axioms the statement, duly formalized, that for all w, if v is a variable and w is z preceded by an existential quantifier (Ev) and z contains no free variables different from v, then {Ref(w,1)

**≡**(Ex) Ref(z,x)} & {(Ref(w,0)

**≡ -**(Ex)(Ref(z,x)}."

This is now corrected and a mention-use problem a little further down (just before "What Field observed" has also been corrected.

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