Volume 31, Number 1, Winter 1990
Frans Voorbraak:
A Simplification of the Completeness Proofs for Guaspari and Solovay's R. 44-63
John Fox:
Motivation and Demotivation of a Four-Valued Logic. 76-80
Arnon Avron:
Gentzenizing Schroeder-Heister's Natural Extension of Natural Deduction. 127-135
Volume 31, Number 2, Spring 1990
Arnon Avron:
Relevance and Paraconsistency - A New Approach, Part II: The Formal Systems. 169-202
Robert Cowen:
Two Hypergraph Theorems Equivalent to BPI. 232-240
Chris Mortensen:
Models for Inconsistent and Incomplete Differential Calculus. 274-285
M. E. Adams,
R. Cignolli:
A Note on the Axiomatization of Equational Classes of n-Valued Lukasiewicz Algebras. 304-307
Balázs Biró:
On Generalizations of a Theorem of Vaught. 330-336
Volume 31, Number 3, Summer 1990
Alexander Bochman:
Concerted Instant-Interval Temporal Semantics I: Temporal Ontologies. 403-414
John Nolt:
A Fully Logical Inductive Logic. 415-436
Volume 31, Number 4, Fall 1990
Toshiyasu Arai:
Derivability Conditions on Rosser's Provability Predicates. 487-497
David Marker:
Enumerations of Turing Ideals with Applications. 509-514
Piero Pagliani:
Remarks on Special Lattices and Related Constructive Logics with Strong Negation. 515-528
Yde Venema:
Expressiveness and Completeness of an Interval Tense Logic. 529-547
Noby-Yuki Suzuki:
Some Syntactical Properties of Intermediate Predicate Logics. 548-559
Cinzia Bonotto:
A Generalization of the Adequacy Theorem for the Quasi-Senses. 560-575
Alexander Bochman:
Concerted Instant-Interval Temporal Semantics II: Temporal Valuations and Logics of Change. 580-601