Variations on da Costa C Systems and dual-intuitionistic logics
Richard Sylvan
Simplified semantics for basic relevant logics
Graham Priest & Richard Sylvan
Prospects for regional philosophies in Australasia
Process and Action: Relevant Theory and Logics
Proceedings of the Fifth Latin American Symposium on Mathematical ...
Richard Sylvan & Roberto Cignoli & Ayda Arruda & Leopoldo Bertossi & Martin Bunder & Rolando Chuaqui & Newton C.A. Da Costa & Carlos A. Di Prisco & Itala M. L. D'ottaviano & Solomon Feferman & Andre Joyal & Gonzalo E. Reyes & E. G. K. Lopez-Escobar & Klaus Madlener & F. Otto & Jerome Malitz & Jan Mycielski & William N. Reinhardt & Val Plumwood
On Making a Coherence Theory of Truth Value
On Interpreting Truth Tables and Relevant Truth Table Logic
Negation and Contradiction
Richard Sylvan & Val Plumwood
Jainist Logics
Is There a Need for a New, an Environmental, Ethic?
Intuitionist logic - Subsystem of, extension of, or rival to, ...
The Importance of Nonexistent Objects and of Intensionality ...
The Fight for the Forests
Val Plumwood & Richard Sylvan
A Critique of Deep Ecology, Part II
A Critique of Deep Ecology
Contradiction, Assertion, and "Frege's Point"
Cause as an implication
Richard Sylvan & Newton C.A. Da Costa
Beyond the universal Turing machine
B. Jack Copeland & Richard Sylvan
Answering Another Alleged Dilemma Destroying Dialetheism
Richard Sylvan & Graham Priest
Anarchism