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Issue No. 06 - June (1994 vol. 43)
ISSN: 0018-9340
pp: 764-767
<p> This paper derives exact equations for the maximum number of nonterminal vertexes in reduced and quasi-reduced ordered binary decision diagrams (OBDD's). A reduced OBDD is reduced by both merging and deleting vertices, and a quasi-reduced OBDD is reduced only by merging. These formulas are used to tighten Lee's original bounds, and to correct the bounds recently reported by H.T. Liaw and C.S. Lin (1992).</p>
decoding; Boolean functions; least upper bounds; OBDD sizes; exact equations; nonterminal vertexes; reduced ordered binary decision diagrams.

M. Mercer and M. Heap, "Least Upper Bounds on OBDD Sizes," in IEEE Transactions on Computers, vol. 43, no. , pp. 764-767, 1994.
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