| 41. | He made major contributions to the foundations of mathematics, proof theory, especially on natural deduction and sequent calculus.
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| 42. | This is a valid sequent because either B'" A is false or C'" �A is false.
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| 43. | The structure of sequent calculus relates to a calculus whose structure is close to the one of some abstract machines.
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| 44. | Recently Riccardo Bruni has developed a sequent system that are both sound and complete with respect to S _ 0.
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| 45. | Together, the presentation of natural deduction and the sequent calculus introduced the fundamental idea of analytic proof to proof theory.
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| 46. | When Stephenson retired shortly after IBM completed its acquisition of Sequent, responsibility for servers fell on Samuel J . Palmisano.
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| 47. | In contrast, the structural rules operate on the structure of the sequents, ignoring the exact shape of the formulae.
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| 48. | For example, used the word " sequent " strictly for simple conditional assertions with one and only one consequent formula.
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| 49. | Dayton Hudson, Hewlett-Packard, and Sequent Computer Systems all offer subsidized public schools at worksites, says Working Mother.
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| 50. | This corresponds to shifting commutativity of assumptions and derivations outside the sequent calculus, whereas LK embeds it within the system itself.
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