XPost: sci.math   
   From: &noreply@axelvogt.de   
      
   On 29.08.2014 19:55, IV wrote:   
   > "Richard Fateman"  wrote in news:ltg6uo$28p$1@speranza.aioe.org... Which   
   kinds / classes of Real Elementary functions   
   > are solvable?   
   > Is there a solvability theory, or at least a non-decidability theory?   
   >   
   >   
      
   http://fr.wikipedia.org/wiki/Fonction_%C3%A9l%C3%A9mentaire   
   and links therein as references   
      
   I think the English article contains 'errors' (it is meant:   
   inverse of trigs, only)   
      
   What should "real" be? You already kick out sqrt and log,   
   besides inverse trigonometrics.   
      
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