Titlebook: Computation Theory and Logic; Egon Börger Book 1987 Springer-Verlag Berlin Heidelberg 1987 Algorithms.Automat.Boolean function.Variable.al

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https://doi.org/10.1057/9781137292353ons are independent of the given form of the formula, i.e. operations applied to equivalent formulas result equivalent formulas. In order to estimate the required space and time we prove complexity bounds for each of the introduced operations. Finally our considerations are applied to so called inte

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Minimal pairs for polynomial time reducibilities,omial time but every set which reduces to both A and B is polynomial time computable. We show that for every recursive set A∉P there is a recursive set B such that A and B form a minimal pair. Moreover, similar results for pairs without greatest predecessors are proved.

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Unsolvable decision problems for PROLOG programs,be recursively unsolvable. A particularly interesting application of this method gives an affirmative answer to Flannagan‘s [1985] conjecture that the floundering property for queries with respect to MU-PROLOG programs is undecidable.

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