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On two problems of Harvey Friedman
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What this work says
Outgoing claims: the papers this work cites, builds on, or argues with.
inferredcites →https://doi.org/10.1007/bf01988049openalex-snapshot
Eine Unableitbarkeitsbeweismethode für den Intuitionistischen Aussagenkalkül
inferredcites →https://doi.org/10.1007/bf02123806openalex-snapshot
Matrix approach in methodology of sentential calculi
inferredcites →https://doi.org/10.1016/s0049-237x(09)x7004-7openalex-snapshot
An Algebraic Approach to Non-Classical Logics
inferredcites →https://doi.org/10.1305/ndjfl/1093958745openalex-snapshot
A note on Halldén-incompleteness.
inferredcites →https://doi.org/10.2307/2268135openalex-snapshot
Some theorems about the sentential calculi of Lewis and Heyting
inferredcites →https://doi.org/10.2307/2268941openalex-snapshot
Systems of modal logic which are not unreasonable in the sense of Halldén
inferredcites →https://doi.org/10.2307/2271891openalex-snapshot
One hundred and two problems in mathematical logic
inferredcites →https://doi.org/10.2307/2963675openalex-snapshot
Disjunction and existence under implication in elementary intuitionistic formalisms
inferredcites →https://doi.org/10.2307/2964334openalex-snapshot
Concerning formulas of the types A→B ν C,A →(Ex)B(x) in intuitionistic formal systems
What points at this work
Incoming claims: where this work appears in other papers’ reference lists and arguments.
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The Logic of Logical Necessity
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Free and projective Heyting and monadic Heyting algebras
inferred← citeshttps://doi.org/10.1007/bf00370370openalex-snapshot
Modal counterparts of Medvedev logic of finite problems are not finitely axiomatizable
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On maximal intermediate predicate constructive logics
inferred← citeshttps://doi.org/10.1007/s00153-006-0320-8openalex-snapshot
On the rules of intermediate logics
inferred← citeshttps://doi.org/10.1007/s00153-014-0388-5openalex-snapshot
Admissibility and refutation: some characterisations of intermediate logics
inferred← citeshttps://doi.org/10.1007/s10992-015-9380-8openalex-snapshot
Consequence Relations and Admissible Rules
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On the Modal Logic of Subset and Superset: Tense Logic over Medvedev Frames
inferred← citeshttps://doi.org/10.1007/s11225-020-09936-9openalex-snapshot
Inquisitive Heyting Algebras
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Constructive Validity of a Generalized Kreisel–Putnam Rule
inferred← citeshttps://doi.org/10.1007/s11225-026-10244-xopenalex-snapshot
An Intermediate Logic Contained in Medvedev’s Logic with the Disjunction Property
inferred← citeshttps://doi.org/10.1016/j.apal.2013.09.003openalex-snapshot
On unification and admissible rules in Gabbay–de Jongh logics
inferred← citeshttps://doi.org/10.1017/bsl.2020.43openalex-snapshot
DECIDABILITY OF ADMISSIBILITY: ON A PROBLEM BY FRIEDMAN AND ITS SOLUTION BY RYBAKOV
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UNIFICATION IN INTERMEDIATE LOGICS
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UNIFICATION IN SUPERINTUITIONISTIC PREDICATE LOGICS AND ITS APPLICATIONS
inferred← citeshttps://doi.org/10.1093/jigpal/jzaf064openalex-snapshot
The logics of individual Medvedev frames
inferred← citeshttps://doi.org/10.1093/jigpal/jzr028openalex-snapshot
Projective unification in modal logic
inferred← citeshttps://doi.org/10.1093/jigpal/jzv024openalex-snapshot
Almost structurally complete infinitary consequence operations extending S4.3
inferred← citeshttps://doi.org/10.1093/jigpal/jzy077openalex-snapshot
Unification in first-order transitive modal logic
inferred← citeshttps://doi.org/10.1093/logcom/exp078openalex-snapshot
Admissible Rules of Lukasiewicz Logic
inferred← citeshttps://doi.org/10.1093/logcom/exw024openalex-snapshot
A bimodal perspective on possibility semantics
inferred← citeshttps://doi.org/10.1215/00294527-3838972openalex-snapshot
The Admissible Rules of BD2 and GSc
inferred← citeshttps://doi.org/10.1305/ndjfl/1093635238openalex-snapshot
Some results on intermediate constructive logics.
inferred← citeshttps://doi.org/10.29007/1mcdopenalex-snapshot
A Syntactic Characterization of the Gabbay-de Jongh Logics
inferred← citeshttps://doi.org/10.33540/1486openalex-snapshot
Uniform Interpolation and Admissible Rules
inferred← citeshttps://doi.org/10.3390/axioms8030100openalex-snapshot
Deductive Systems with Multiple-Conclusion Rules and the Disjunction Property
inferred← citeshttps://doi.org/10.48550/arxiv.1504.03380openalex-snapshot
Mathematical semantics of intuitionistic logic
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