File: ascii_ISO_DEF.doc

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\THEOREM ascii_ISO_DEF ascii
|- (!a. ABS_ascii(REP_ascii a) = a) /\
   (!r.
     TRP
     (\v tl.
       (?b0 b1 b2 b3 b4 b5 b6 b7. v = b0,b1,b2,b3,b4,b5,b6,b7) /\
       (LENGTH tl = 0))
     r =
     (REP_ascii(ABS_ascii r) = r))
\ENDTHEOREM