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Immanent reasoning or equality in action. A plaidoyer for the play level. (English) Zbl 1403.03003

Logic, Argumentation & Reasoning 18. Cham: Springer (ISBN 978-3-319-91148-9/hbk; 978-3-319-91149-6/ebook). xx, 332 p. (2018).
Publisher’s description: This monograph proposes a new way of implementing interaction in logic. It also provides an elementary introduction to Constructive Type Theory (CTT). The authors equally emphasize basic ideas and finer technical details. In addition, many worked out exercises and examples will help readers to better understand the concepts under discussion.
One of the chief ideas animating this study is that the dialogical understanding of definitional equality and its execution provide both a simple and a direct way of implementing the CTT approach within a game-theoretical conception of meaning. In addition, the importance of the play level over the strategy level is stressed, binding together the matter of execution with that of equality and the finitary perspective on games constituting meaning.
According to this perspective the emergence of concepts are not only games of giving and asking for reasons (games involving Why-questions), they are also games that include moves establishing how it is that the reasons brought forward accomplish their explicative task. Thus, immanent reasoning games are dialogical games of Why and How.

MSC:

03-02 Research exposition (monographs, survey articles) pertaining to mathematical logic and foundations
03B15 Higher-order logic; type theory (MSC2010)
03B42 Logics of knowledge and belief (including belief change)
03B60 Other nonclassical logic
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