Combining Texts

All the ideas for 'A Defense of Abortion', 'Oxford University Statutes' and 'Negation'

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23 ideas

1. Philosophy / B. History of Ideas / 4. Early European Thought
8074 There is a five shilling fine for each point of divergence from the thinking of Aristotle [Oxford Univ 1350]
2. Reason / A. Nature of Reason / 9. Limits of Reason
18781 Inconsistency doesn't prevent us reasoning about some system [Mares]
4. Formal Logic / E. Nonclassical Logics / 2. Intuitionist Logic
18789 Intuitionist logic looks best as natural deduction [Mares]
18790 Intuitionism as natural deduction has no rule for negation [Mares]
4. Formal Logic / E. Nonclassical Logics / 3. Many-Valued Logic
18787 Three-valued logic is useful for a theory of presupposition [Mares]
5. Theory of Logic / A. Overview of Logic / 6. Classical Logic
18793 Material implication (and classical logic) considers nothing but truth values for implications [Mares]
18784 In classical logic the connectives can be related elegantly, as in De Morgan's laws [Mares]
5. Theory of Logic / D. Assumptions for Logic / 1. Bivalence
18786 Excluded middle standardly implies bivalence; attacks use non-contradiction, De M 3, or double negation [Mares]
18780 Standard disjunction and negation force us to accept the principle of bivalence [Mares]
5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
18782 The connectives are studied either through model theory or through proof theory [Mares]
5. Theory of Logic / H. Proof Systems / 4. Natural Deduction
18783 Many-valued logics lack a natural deduction system [Mares]
5. Theory of Logic / I. Semantics of Logic / 1. Semantics of Logic
18792 Situation semantics for logics: not possible worlds, but information in situations [Mares]
5. Theory of Logic / K. Features of Logics / 2. Consistency
18785 Consistency is semantic, but non-contradiction is syntactic [Mares]
6. Mathematics / C. Sources of Mathematics / 10. Constructivism / b. Intuitionism
18788 For intuitionists there are not numbers and sets, but processes of counting and collecting [Mares]
19. Language / C. Assigning Meanings / 2. Semantics
18791 In 'situation semantics' our main concepts are abstracted from situations [Mares]
25. Social Practice / F. Life Issues / 3. Abortion
4061 The right to life is not a right not to be killed, but not to be killed unjustly [Thomson]
4057 A newly fertilized ovum is no more a person than an acorn is an oak tree [Thomson]
4695 Maybe abortion can be justified despite the foetus having full human rights [Thomson, by Foot]
4059 It can't be murder for a mother to perform an abortion on herself to save her own life [Thomson]
4696 The foetus is safe in the womb, so abortion initiates its death, with the mother as the agent. [Foot on Thomson]
4058 Is someone's right to life diminished if they were conceived by a rape? [Thomson]
4060 The right to life does not bestow the right to use someone else's body to support that life [Thomson]
4062 No one is morally required to make huge sacrifices to keep someone else alive for nine months [Thomson]