Abstract

We present a characterization ofμ-branching programs and a decomposition tree data structure which results from the characterization. We then show how the data structure can be used to test the equivalence of a pair ofn-nodeμ-branching programs inO(nα(n)) time, whereα(n) is a functional inverse of the Ackermann function. In addition, we show that equivalence testing ofkμ-branching programs fork≥3 is co-NP-complete.

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