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what's wrong with this?!!

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  • Subject: [mg114909] what's wrong with this?!!
  • From: olfa <olfa.mraihi at>
  • Date: Wed, 22 Dec 2010 02:36:36 -0500 (EST)

Hi mathematica community,

this is the system to solve:
Element[{iP, N}, Integers] &&
Not[(iP < N)] &&
Exists[{iPP}, (iPP < N) && iP == iPP + 1],
{iP}, Backsubstitution -> True]

the output is:
(N | iP) =E2=88=88 Integers && N =E2=89=A4 iP < 1 + N

but it should be:

so what's the problem what is missing to get the correct output?

thank you very much.

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