Strange Output!!!Please help me thank you.
- To: mathgroup at smc.vnet.net
- Subject: [mg98691] Strange Output!!!Please help me thank you.
- From: olfa <olfa.mraihi at yahoo.fr>
- Date: Thu, 16 Apr 2009 04:15:57 -0400 (EDT)
Hi Mathematica community, I have to solve this system: Reduce[{Element[{i, j}, Integers], i <= iP, j >= jP, 1*j + 1*i == 1*jP + 1*iP, Reduce[{Element[{N, iP}, Integers], Not[(iP < N)], Exists[{iPP}, (iPP < N) && iP == iPP + 1]}]}, {iP, jP}, Backsubstitution -> True] the output should be:( i | j | N | iP) are Integers && i <= N && iP == N && jP == i + j - N but mathematica gave me this output: (C[1] | C[2] | C[3] | C[4]) are Integers && C[1] >= 0 && C[2] >= 0 && C[3] >= 0 && C[4] >= 0 && i == C[1] - C[2] - C[3] && iP == C[1] - C[2] + C[4] && N == C[1] - C[2] + C[4] && jP == j - C[3] - C[4] which is not understandable at all! and I dont want the output to be like that. I have observed that when I remove i from Element[{i, j}, Integers] mathematica give me the output I want and which is :iP == N && jP == i + j - N So how can I have this same output without removing i from Element[{i, j}, Integers]? Thank you very much in advance.