Branching programs are a well established computation model for Boolean functions, especially read-once branching programs have been studied intensively. In this paper the expressive power of nondeterministic read-once branching programs, more precisely the class of functions representable in polynomial size, is investigated. For that reason two restricted models of nondeterministic read-once branching programs are defined and a lower bound method is presented. Furthermore, the first exponential lower bound for integer multiplication on the size of a nondeterministic nonoblivious read-once branching program model is proven.
@article{ITA_2001__35_2_149_0, author = {Bollig, Beate}, title = {Restricted nondeterministic read-once branching programs and an exponential lower bound for integer multiplication}, journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications}, volume = {35}, year = {2001}, pages = {149-162}, mrnumber = {1862460}, zbl = {0992.68057}, language = {en}, url = {http://dml.mathdoc.fr/item/ITA_2001__35_2_149_0} }
Bollig, Beate. Restricted nondeterministic read-once branching programs and an exponential lower bound for integer multiplication. RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 35 (2001) pp. 149-162. http://gdmltest.u-ga.fr/item/ITA_2001__35_2_149_0/
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