sage: B.<a,b,c> = BooleanPolynomialRing()
sage: f=a+b*c                                            
sage: from sage.sat.converters.polybori import CNFEncoder
sage: from sage.sat.solvers.dimacs import DIMACS         
sage: solver = DIMACS()
sage: ce = CNFEncoder(solver, B)
sage: ce([f])
[None, a, b, c]
sage: solver.clauses()
[((-2, -3, 1), False, None), ((3, -1), False, None), ((2, -1), False, None)]


On Saturday 20 Apr 2013, Santanu Sarkar wrote:
> Dear all,
>   I want to convert the polynomial f into Conjunctive Normal Form (CNF)
> in Sage. How can I do this?
> 
> 
> B.<a,b,c> = BooleanPolynomialRing()
> f=a+b*c

Cheers,
Martin

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