SatisfiabilityInstances[] how to put variables
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- Subject: [mg128359] SatisfiabilityInstances[] how to put variables
- From: info at dvholten.de
- Date: Tue, 9 Oct 2012 00:40:08 -0400 (EDT)
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folks,
i am playing with the satisfiability-support in Mathematica.
SatisfiabilityInstances[] gives me the settings of the variables, which return true for the whole formula. However, the input is a little uncomfortable:
SatisfiabilityInstances[ formulaCNF, { v1, v2, v3, v4, v5 } ]
needs to be called for a formula with the 5 variabled v1..v5. For a formula with 400 variables this is not practical.
is there short way to extract a list of variables from the formula?
is there a short way to build a list of variables names?
(assuming the variables are named as a sequence like x1, x2...x77 or var1...var999).
or is there a way to implictily tell SatisfiabilityInstances[] or one of his brothers what the variables are in the formula so that they dont have to be given one by one?
thanks
DvH
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