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src/HOL/Vimage.thy
author paulson
Wed, 03 Mar 1999 10:32:35 +0100
changeset 6297 5b9fbdfe22b7
parent 4648 f04da668581c
child 7515 0c05469cad57
permissions -rw-r--r--
new theory of extending the state space

Vimage = Set +

consts
  "-``"          :: ['a => 'b, 'b set] => ('a set)   (infixr 90)

defs
  vimage_def     "f-``B           == {x. f(x) : B}"

end
isabelle