March 20th, 2014, 08:05 AM  #1 
Senior Member Joined: Apr 2010 Posts: 451 Thanks: 1  wf formulas
Which of the following are well formed formulas: 
March 20th, 2014, 12:19 PM  #2 
Senior Member Joined: Dec 2013 From: Russia Posts: 327 Thanks: 108  Re: wf formulas
For one, a quantifier must be followed by a variable. Do you have the definition of a wff? Have you read any examples of applying this definition? 
March 20th, 2014, 04:24 PM  #3  
Senior Member Joined: Apr 2010 Posts: 451 Thanks: 1  Re: wf formulas Quote:
 
March 24th, 2014, 01:18 PM  #4  
Senior Member Joined: Dec 2013 From: Russia Posts: 327 Thanks: 108  Re: wf formulas Quote:
Quote:
To sum up: the definition of a wellformed formula depends on the vocabulary. If in the given vocabulary 1 is a constant, then it cannot immediately follow a quantifier.  
April 24th, 2014, 04:23 PM  #5  
Senior Member Joined: Apr 2010 Posts: 451 Thanks: 1  Quote:
 

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