doc-src/Intro/arith.thy
changeset 105 216d6ed87399
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104:d8205bb279a7 105:216d6ed87399
       
     1 Arith = FOL +
       
     2 classes arith < term
       
     3 consts  "0"     :: "'a::arith"                  ("0")
       
     4         "1"     :: "'a::arith"                  ("1")
       
     5         "+"     :: "['a::arith,'a] => 'a"       (infixl 60)
       
     6 end