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49 468 (0,19s)

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Burden of Proof

The article deals with the meaning and function of the burden of proof in civil proceeding. Author comments the different views on the burden of proof and the meaning of the objective and subjective burden of proof, the abs...

Law

  • 2018
  • D
Result

Composition of Deductions within the Propositions-As-Types Paradigm

paradigm is less suited for general proof theory because-unlike proof theory based on category theory-it emphasizes categorical proofs over hypothetical inferences. One.) Dag Prawitz on Proof...

Philosophy, History and Philosophy of science and technology

  • 2020
  • Jimp
  • Link
Result

From Iterative Algebras to Iterative Theories

The coalgebraic proof of the existence of a free iterative theory is given. The proof uses a concept of iterative algebras and is much simpler and more general than the original proof given by Calvin Elgot and his ...

BA - Obecná matematika

  • 2004
  • A
Result

On the proof complexity of the Nisan-Wigderson generator

We prove the consistency of a statement generalizing Razborov''s conjecture from proof complexity with the true universal theory in the language of Cook''s theory PV....

BA - Obecná matematika

  • 2011
  • Jx
  • Link
Result

Weak Theories and Essential Undecidability

Weak variants Q-, R, and R_0 of Robinson arithmetic, and the theory of concatenation TC, and essential udecidability proofs of those are discusses. A proof of self-reference theorem for the theory R_0 is given....

BA - Obecná matematika

  • 2008
  • D
Result

On the proof complexity of the Nisan-Wigderson generator based on a hard NP boolean AND coNP function

We prove the consistency of a statement generalizing Razborov's conjecture from proof complexity with the true universal theory in the language of Cook's theory PV....

BA - Obecná matematika

  • 2011
  • Jx
  • Link
Result

Fragment of Nonstandard Analysis with a Finitary Consistency Proof

We introduce a nonstandard arithmetic NQA­-­based on the theory developed by R minimization schema. A finitary consistency proof for NQA-formalizable in PRA is presented. We also show interesting facts about the strength of the ...

BA - Obecná matematika

  • 2007
  • Jx
Result

From feasible proofs to feasible computations

We study several situations where it is possible to extract a feasible computational information from a proof, either in a first-order theory or in a propositional proof system....

BA - Obecná matematika

  • 2010
  • D
Result

From Feasible Proofs to Feasible Computations

We study several situations where it is possible to extract a feasible computational information from a proof, either in a first-order theory or in a propositional proof system....

BA - Obecná matematika

  • 2010
  • D
Result

A new proof of Ajtai's completeness theorem for nonstandard finite structures

related to questions in complexity theory. In this paper we give a new proof in a model of arithmetic can be end-extended and expanded to a model of a given theory G if and only if a contradiction cannot be derived by a (p...

BA - Obecná matematika

  • 2015
  • Jx
  • Link
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