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Routley, Richard, Routley, Val. The Semantics of First Degree Entailment
1972, Noûs 6 (4):335-359

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Abstract:

From the introduction: "we argue that the semantics of the first degree paradox-free implication system FD supports the claim it is superior to strict implication as an analysis of entailment at the first degree level. The semantics also reveals that Disjunctive Syllogism, [...] far from being a paradigmatic entailment, is invalid, and allows the illegitimate suppression of tautologies"

Comment: The paper introduces some of the central ideas in the relevance logic literature, e..g the connection between suppression and sufficiency, and the modeling of negation via the Routley star. It is a natural pick for a specialized course on relevance logic, but it can also be used as an introduction to (or further reading about) relevance logic in a general course on non-classical logics. Some familiarity with classical and modal logic (in particular, the notion of strict implication) is required.

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Routley, Richard, Routley, Val. Negation and Contradiction
1985, Revista Columbiana de Mathematicas:201--231

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Added by: Franci Mangraviti
Abstract:

The problems of the meaning and function of negation are disentangled from ontological issues with which they have been long entangled. The question of the function of negation is the crucial issue separating relevant and paraconsistent logics from classical theories. The function is illuminated by considering the inferential role of contradictions, contradiction being parasitic on negation. Three basic modelings emerge: a cancellation model, which leads towards connexivism, an explosion model, appropriate to classical and intuitionistic theories, and a constraint model, which includes relevant theories. These three modelings have been seriously confused in the modern literature: untangling them helps motivate the main themes advanced concerning traditional negation and natural negation. Firstly, the dominant traditional view, except around scholastic times when the explosion view was in ascendency, has been the cancellation view, so that the mainstream negation of much of traditional logic is distinctively nonclassical. Secondly, the primary negation determinable of natural negation is relevant negation. In order to picture relevant negation the traditional idea of negation as otherthanness is progressive) refined, to nonexclusive restricted otherthanness. Several pictures result, a reversal picture, a debate model, a record cabinet (or files of the universe) model which help explain relevant negation. Two appendices are attached, one on negation in Hegel and the Marxist tradition, the other on Wittgenstein's treatment of negation and contradiction.

Comment: Can be used in a course on relevant logic or on negation. The emphasis on comparing different models makes it ideal for discussion. No familiarity with relevant logic is required.

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Ruetsche,Laura. Interpreting Quantum Theories: The art of the possible
2011, Oxford University Press.

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Added by: Laura Jimenez

Publisher's Note: Traditionally, philosophers of quantum mechanics have addressed exceedingly simple systems: a pair of electrons in an entangled state, or an atom and a cat in Dr. Schrodinger's diabolical device. But recently, much more complicated systems, such as quantum fields and the infinite systems at the thermodynamic limit of quantum statistical mechanics, have attracted, and repaid, philosophical attention. Interpreting Quantum Theories has three entangled aims. The first is to guide those familiar with the philosophy of ordinary QM into the philosophy of 'QM infinity', by presenting accessible introductions to relevant technical notions and the foundational questions they frame. The second aim is to develop and defend answers to some of those questions. Does quantum field theory demand or deserve a particle ontology? How (if at all) are different states of broken symmetry different? And what is the proper role of idealizations in working physics? The third aim is to highlight ties between the foundational investigation of QM infinity and philosophy more broadly construed, in particular by using the interpretive problems discussed to motivate new ways to think about the nature of physical possibility and the problem of scientific realism.

Comment: Really interesting book for postgraduate courses involving the study of interpretative theories of Quantum Mechanics. The argument is focused on the quantum theory of systems with infinitely many degrees of freedom. The philosophical approach is defended through careful attention to scientific details.

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Russell, Gillian. Logical Pluralism
2013, Standford Encyclopedia of Philosophy.

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Added by: Giada Fratantonio and Berta Grimau
Abstract:
Description: Survey article on logical pluralism. The article is divided into three main parts: i) in the first one the author presents the main arguments for logical pluralism with respect to logical consequence; ii) in the second part, the author considers the relation between logical pluralism and Carnap's linguistic pluralism; iii) in the last section, the author considers further kinds of logical pluralism.

Comment: This article could be used as background or overview reading on logical pluralism. Suitable for a specialised, perhaps master's level course on logical pluralism or for a more general course on philosophy of logic touching on the topic.

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Russell, Gillian. Logical Nihilism: Could there be no Logic?
2018, Philosophical Issues, 28: 308-324

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Added by: Franci Mangraviti
Abstract:

Logical nihilism can be understood as the view that there are no laws of logic. This paper presents both a counterexample-based argument in favor of logical nihilism, and a way to resist it by using Lakatos' method of lemma incorporation. The price to pay is the loss of absolute generality.

Comment: The paper is appropriate for any course discussing the monism vs pluralism vs nihilism debate in logic (or maybe even focusing on varieties of logical nihilism). On a technical level it requires no more than an introduction to formal logic; some familiarity with monist and pluralist positions is helpful for context.

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Russell, Gillian. Logic: A Feminist Approach
2020, In Garchar, Kimberly K. and Shew, Melissa M. (Ed.). Philosophy for girls: An invitation to a life of thought, pp. 79-98

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Added by: Franci Mangraviti
Abstract:

This chapter asks whether there is any such thing as feminist logic. It defines feminism and logic, and then goes on to present and evaluate four possible views, introducing and critiquing the work of Andrea Nye, Val Plumwood, and Susan Stebbing. It argues that Stebbing’s approach—on which feminism is one among many political applications of logic—is correct, but that feminist logic could do more, by providing a formal framework for the study of social hierarchies, much as it presently provides a formal framework for the study of numbers and similarity rankings among possible worlds.

Comment: Ideal for an intro course to either feminist philosophy or logic, to introduce possible interactions between the fields. More advanced courses (in either direction) might want to adopt G. Russell's "From Anti-Exceptionalism to Feminist Logic" instead, which covers the same topic in a lot more detail.

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Russell, Gillian. From Anti-Exceptionalism to Feminist Logic
2023, Hypatia, forthcoming

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Added by: Franci Mangraviti
Abstract:

Anti-exceptionalists about formal logic think that logic is continuous with the sciences. Many philosophers of science think that there is feminist science. Putting these two things together: can anti-exceptionalism make space for feminist logic? The answer depends on the details of the ways logic is like science and the ways science can be feminist. This paper wades into these details, examines five different approaches, and ultimately argues that anti-exceptionalism makes space for feminist logic in several different ways.

Comment:
available in this Blueprint

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Russell, Gillian. Logic isn’t Normative
2020, Inquiry: An Interdisciplinary Journal of Philosophy 63 (3-4):371-388

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Added by: Franci Mangraviti
Abstract:

Some writers object to logical pluralism on the grounds that logic is normative. The rough idea is that the relation of logical consequence has consequences for what we ought to think and how we ought to reason, so that pluralism about the consequence relation would result in an incoherent or unattractive pluralism about those things. In this paper I argue that logic isn’t normative. I distinguish three different ways in which a theory – such as a logical theory – can be entangled with the normative and argue that logic is only entangled in the weakest of these ways, one which requires it to have no normativity of its own. I use this view to show what is wrong with three different arguments for the conclusion that logic is normative.

Comment: Appropriate for any course touching on the normativity of logic question. Familiarity with the question and with logical pluralism is helpful, but not required. Could be paired with a defense of normativity for discussion.

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Russell, Gillian. Social Spheres: Logic, Ranking, and Subordination
2024, In R. Cook and A. Yap (eds.), Feminist Philosophy and Formal Logic. University of Minnesota Press

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Added by: Franci Mangraviti and Viviane Fairbank
Abstract:

This paper uses logic - a formal language with models and a consequence relation - to think about the social and political topics of subordination and subordinative speech. I take subordination to be a matter of three things: i) ranking one person or a group of people below others, ii) depriving the lower-ranked of rights, and iii) permitting others to discriminate against them. Subordinative speech is speech - utterances in contexts - which subordinates. Section 1 introduces the topic of subordination using examples from the 1979 novel Kindred by Octavia Butler. Section 2 uses these examples to clarify and illustrate the definitions of subordination and subordinative speech. Sections 3 and 4 then develop a way of modeling subordination using a system of social spheres, an adaptation of (Lewis, 1973)'s approach to modeling the relation of comparative similarity on worlds for counterfactuals. Section 4 looks at three possible applications for this work: giving truth-conditions for social quantifiers, identifying fallacies involving such expressions, and explaining the pragmatics of subordinative speech. The last section anticipates objections and raises further questions.

Comment:
available in this Blueprint

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Sagi, Gil. Models and Logical Consequence
2014, Journal of Philosophical Logic 43(5): 943-964.

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Added by: Berta Grimau

Abstract: This paper deals with the adequacy of the model-theoretic definition of logical consequence. Logical consequence is commonly described as a necessary relation that can be determined by the form of the sentences involved. In this paper, necessity is assumed to be a metaphysical notion, and formality is viewed as a means to avoid dealing with complex metaphysical questions in logical investigations. Logical terms are an essential part of the form of sentences and thus have a crucial role in determining logical consequence. Gila Sher and Stewart Shapiro each propose a formal criterion for logical terms within a model-theoretic framework, based on the idea of invariance under isomorphism. The two criteria are formally equivalent, and thus we have a common ground for evaluating and comparing Sher and Shapiro philosophical justification of their criteria. It is argued that Shapiro's blended approach, by which models represent possible worlds under interpretations of the language, is preferable to Sher’s formal-structural view, according to which models represent formal structures. The advantages and disadvantages of both views’ reliance on isomorphism are discussed.

Comment: This paper provides an original view on the debate on the adequacy of the model-theoretic notion of logical consequence as well as a good overview of the relevant part of the debate. It can be used as standing on its own, but it can also serve as a complement to Sher (1996), also written by a female logician, and Shapiro (1998). Adequate for a general course on philosophy of logic or in a more specialized course on logical consequence. The paper is not technical, although students should've have taken at least an introductory logic course.

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