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doc-src/Intro/arith.thy
author wenzelm
Mon, 18 Apr 2011 12:04:21 +0200
changeset 42385 b46b47775cbe
parent 105 216d6ed87399
permissions -rw-r--r--
simplified Sorts.class_error: plain Proof.context; tuned;

Arith = FOL +
classes arith < term
consts  "0"     :: "'a::arith"                  ("0")
        "1"     :: "'a::arith"                  ("1")
        "+"     :: "['a::arith,'a] => 'a"       (infixl 60)
end
isabelle