Abstract
Boolean satisfiability (SAT) solvers are used heavily in electronic engineering verification tools for checking satisfiability of Boolean formulas. Most state-of-the-art SAT solvers are based on the DPLL algorithm and require the input formula to be in conjunctive normal form (CNF). We represent the vhpform of a given NNF formula in the form of two graphs called vpgraph and hpgraph. The input formula is translated into a 2-dimensional format called vertical-horizontal path form (vhpform). In this form disjuncts (operands of ∨) are arranged orizontally and conjuncts (operands of ∧) are arranged vertically.The formula is satisfiable if and only if there exists a vertical path through this arrangement that does not contain two opposite literals ( l and ¬l). The input formula is not required to be in CNF. This algorithm is very important both for the design of integrated circuit and the development of electronic engineering.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
