Graph-Based Algorithms for Boolean Function Manipulation
IEEE Transactions on Computers
The complexity of Boolean functions
The complexity of Boolean functions
Efficient implementation of a BDD package
DAC '90 Proceedings of the 27th ACM/IEEE Design Automation Conference
Spectral transforms for large boolean functions with applications to technology mapping
DAC '93 Proceedings of the 30th international Design Automation Conference
Permutation and phase independent Boolean comparison
Integration, the VLSI Journal
On diagnosis and correction of design errors
ICCAD '93 Proceedings of the 1993 IEEE/ACM international conference on Computer-aided design
Detection of symmetry of Boolean functions represented by ROBDDs
ICCAD '93 Proceedings of the 1993 IEEE/ACM international conference on Computer-aided design
Efficient Boolean function matching
ICCAD '92 Proceedings of the 1992 IEEE/ACM international conference on Computer-aided design
ICCD '92 Proceedings of the 1991 IEEE International Conference on Computer Design on VLSI in Computer & Processors
Fast Boolean Matching with Don't Cares
ISQED '06 Proceedings of the 7th International Symposium on Quality Electronic Design
Proceedings of the 43rd annual Design Automation Conference
Formal Methods in System Design
Extending symmetric variable-pair transitivities using state-space transformations
Proceedings of the great lakes symposium on VLSI
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This paper addresses problems that arise while checking the equivalence of two Boolean functions under arbitrary input permutations. The permutation problem has several applications in the synthesis and verification of combinational logic: it arises in the technology mapping stage of logic synthesis and in logic verification. A popular method to solve it is to compute a signature for each variable that helps to establish a correspondence between the variables. Several researchers have suggested a wide range of signatures that have been used for this purpose. However, for each choice of signature, there remain variables that cannot be uniquely identified. Our research has shown that, for a given example, this set of problematic variables tends to be the same–regardless of the choice of signatures. The paper investigates this problem.