src/ZF/AC/Transrec2.thy
author clasohm
Sat Dec 09 13:36:11 1995 +0100 (1995-12-09 ago)
changeset 1401 0c439768f45c
parent 1203 a39bec971684
child 1478 2b8c2a7547ab
permissions -rw-r--r--
removed quotes from consts and syntax sections
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(*  Title: 	ZF/AC/Transrec2.thy
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    ID:         $Id$
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    Author: 	Krzysztof Grabczewski
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Transfinite recursion introduced to handle definitions based on the three
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cases of ordinals.
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*)
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Transrec2 = OrdQuant + Epsilon +
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consts
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  transrec2               :: [i, i, [i,i]=>i] =>i
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defs
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  transrec2_def  "transrec2(alpha, a, b) ==   			
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		         transrec(alpha, %i r. if(i=0,   	
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		                  a, if(EX j. i=succ(j),   	
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		                  b(THE j. i=succ(j), r`(THE j. i=succ(j))),   
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		                  UN j<i. r`j)))"
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end