On the scarcity of contravariant left adjunctions

DOI10.1007/BF01188394zbMath0611.18001OpenAlexW2081975202MaRDI QIDQ1087629

George M. Bergman

Publication date: 1987

Published in: Algebra Universalis (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf01188394

zbMATH Keywords

quasivarietiesvarieties of algebrasfinitely generated algebrasadjoint pairscovariant functorsinfinite product algebramutually left adjoint contravariant functors

Mathematics Subject Classification ID

Adjoint functors (universal constructions, reflective subcategories, Kan extensions, etc.) (18A40) Equational categories (18C05) Categories of algebras (08C05) Factorization systems, substructures, quotient structures, congruences, amalgams (18A32)

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