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Andrew Schumann, Roman Murawski, Jean-Yves Beziau, Kazimierz Trzęsicki, Alexandre Costa-Leite, Edelcio G. de Souza, Fabien Schang, Jens Lemanski, Michał Dobrzański, Tomasz Jarmużek, Mateusz Klonowski, Rafał Palczewski, Jerzy Pogonowski, Janusz Kaczmarek, Stanisław Krajewski, Marcin Trepczyński, Wojciech Krysztofiak, Marek Zirk-Sadowski,

Fabien Schang is doctor in philosophy and Visiting Professor at the Federal University of Goiás (Brazil).
Co-author of two books and a number of international scientific papers, his works are centered on logic and epistemology. His research program of formal philosophy consists in applying logical tools to philosophical problems, including a formal semantics of oppositions or partition semantics.



A Judgmental Reconstruction of Some of
Professor Woleński’s Logical and Philosophical Writings

Roman Suszko said that “Obviously, any multiplication of logical values is a mad
idea and, in fact, Łukasiewicz did not actualize it.” The aim of the present paper is
to qualify this ‘obvious’ statement through a number of logical and philosophical
writings by Professor Jan Woleński, all focusing on the nature of truth-values and
their multiple uses in philosophy. It results in a reconstruction of such an abstract
object, doing justice to what Suszko held a ‘mad’ project within a generalized
logic of judgments. Four main issues raised by Woleński will be considered to test
the insightfulness of such generalized truth-values, namely: the principle of
bivalence, the logic of scepticism, the coherence theory of truth, and nothingness.


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