New PDF release: A Precis of Mathematical Logic

By J. M. Bocheński (auth.)

ISBN-10: 9048183294

ISBN-13: 9789048183296

ISBN-10: 9401705925

ISBN-13: 9789401705929

The paintings of which this is often an English translation seemed initially in French as summary de logique mathematique. In 1954 Dr. Albert Menne introduced out a revised and a bit of enlarged version in German (Grund­ riss der Logistik, F. Schoningh, Paderborn). In making my translation i've got used either variations. For the main half i've got the unique French variation, considering the fact that i presumed there has been a few virtue in retaining the paintings as brief as attainable. despite the fact that, i've got integrated the extra wide old notes of Dr. Menne, his bibliography, and the 2 sections on modal good judgment and the syntactical different types (§ 25 and 27), which have been no longer within the unique. i've got endeavored to right the typo­ graphical blunders that seemed within the unique versions and feature made a couple of additions to the bibliography. In making the interpretation i've got profited greater than phrases can inform from the ever-generous support of Fr. Bochenski whereas he was once educating on the college of Notre Dame in the course of 1955-56. OTTO poultry Notre Dame, 1959 I basic rules § O. advent zero. 1. concept and heritage. Mathematical good judgment, also known as 'logistic', ·symbolic logic', the 'algebra of logic', and, extra lately, easily 'formal logic', is the set of logical theories elaborated through the final century due to a synthetic notation and a carefully deductive method.

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36. 'Universal closure of x' or 'universalization of x' for: 'expression of the same shape as X, preceeded by universal quantifiers binding all the variables of X, where X is a matrix'. 37. 'Existential closure of x' or 'particularization of x' for: 'expression of the same shape as X, preceeded by existential quantifiers binding all the variables of X, where X is a matrix'. 38. 'Closure of x' or 'generalization of x' for: 'universalization or particularization of X'. Examples: '(x)rpx' is a universal closure or universalization of 'rpx'.

54. 541. 542. 543. q: -:J: p I q. -:J. '" P p: -:J: '" •pq. -:J. '" q p I q . po -:J. '" q pi'" q. po -:J. q '" p I q. '" p. -:J. '" q '" pi'" q. '" po -:J. 6. Laws of Composition and Dilemmas '" p V '" q. po -:J. '" q p: -:J: p I q. -:J. 61. 62. 63. p J q . 64. 65. 66. 67. 671. 68. p J q . 532 were posited by the Stoics as 'indemonstrable' laws. Almost all of the laws of this and the preceeding sections were reached by the Scholastics, clearly independently of the Stoics. 63 (along with some others) was discovered, or rather re-discovered, by Leibniz and pleased him so much that he called it the 'praeclarum theorema'.

But they are useful in practice. Furthermore, the great majority of the laws of predicates can be deduced by still more restricted definitions: '(x)tpx' for:' tpa . tpb' '(Ex)tpx' for: 'tpa V tpb'. In fact, all the sentences deduced from these definitions by the use of rules 9 are true, as long as individual constants are not introduced. 2. 21. 22. 23. 24. 25. Rule: Negating all the quantifiers and matrices and substituting existential for universal quantifiers, and inversely, does not change the value of the sentence.

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A Precis of Mathematical Logic by J. M. Bocheński (auth.)


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