Strict interpretations of deterministic pushdown acceptors |
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Authors: | Seymour Ginsburg Chandra M R Kintala |
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Affiliation: | (1) Computer Science Department, University of Southern California, USA;(2) Bell Laboratories, 600 Mountain Ave., 07974 Murray Hill, NJ, USA |
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Abstract: | Three results are established. The first is that every nondeterministic strict interpretation of a deterministic pushdown acceptor (dpda) has an equivalent, deterministic, strict interpretation. The second is that ifM
1 andM
2 are two compatible strict interpretations of the dpdaM, then there exist deterministic strict interpretationsM
andM
such thatL(M
) =L(M
1)L(M
2) andL(M
) =L(M
1)L(M
2). The third states that there is no dpda whose strict interpretations yield all the deterministic context-free languages.This author was supported in part by the National Science Foundation under Grant MCS-77-22323. |
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Keywords: | |
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