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src/HOL/Vimage.thy
author wenzelm
Sun, 29 Nov 1998 13:16:47 +0100
changeset 5989 9670dae0143d
parent 4648 f04da668581c
child 7515 0c05469cad57
permissions -rw-r--r--
proof_general_trans (experimental);
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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f04da668581c New theory of the inverse image of a function
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Vimage = Set +
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consts













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













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defs













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













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end















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