终点
发表于 2025-3-25 07:01:48
Textbook 2004ne-independent characterization of an important complexity class. In 1982, Immerman and Vardi showed that over ordered structures, a fixed point extension of first-order logic captures the complexity class PTIME of polynomial time computable propertiE~s. Shortly thereafter, logical characterizations
优雅
发表于 2025-3-25 09:29:16
1862-4499 logic captures the complexity class PTIME of polynomial time computable propertiE~s. Shortly thereafter, logical characterizations978-3-642-05948-3978-3-662-07003-1Series ISSN 1862-4499 Series E-ISSN 1862-4502
专横
发表于 2025-3-25 14:16:42
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Biomarker
发表于 2025-3-25 16:51:08
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欺骗世家
发表于 2025-3-25 23:53:27
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indignant
发表于 2025-3-26 03:30:12
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废除
发表于 2025-3-26 07:57:36
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使出神
发表于 2025-3-26 11:12:07
The Dismal Science: Economic Manications of finite model theory in computational complexity. We start by proving the earliest such result, Trakhtenbrot’s theorem, stating that finite satisfiability is not decidable. For the proof of Trakhtenbrot’s theorem, we code Turing machines with no inputs. By a refinement of this technique,
职业
发表于 2025-3-26 14:58:31
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Admonish
发表于 2025-3-26 17:03:44
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