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|Title:||The dot-depth and the polynomial hierarchies correspond on the delta levels|
|Source:||Borchert, B., Lange, K.-J., Stephan, F., Tesson, P., Thérien, D. (2005). The dot-depth and the polynomial hierarchies correspond on the delta levels. International Journal of Foundations of Computer Science 16 (4) : 625-644. ScholarBank@NUS Repository. https://doi.org/10.1142/S0129054105003200|
|Abstract:||It is well-known that the ∑ k- and Π k-levels of the dot-depth hierarchy and the polynomial hierarchy correspond via leaf languages. We extend this correspondence to the Δ k-levels of these hierarchies: Leaf P(Δ k L) = Δ k P. The same methods are used to give evidence against an earlier conjecture of Straubing and Thérien about a leaf-language upper bound for BPP. © World Scientific Publishing Company.|
|Source Title:||International Journal of Foundations of Computer Science|
|Appears in Collections:||Staff Publications|
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