Abstract
An exaustive survey on the topics of amalgamation, congruence extension, residual smallness, injectivity and related concepts and properties is E.W. Kiss, L. Márki, P. Pröhle, W. Tholen [10]. Our paper has a more modest aim. We focus almost exclusively on residual smallness. After a brief introduction, we discuss the current status of a fascinating open question that concerns the sizes of subdirectly irreducible algebras in finitely generated varieties.
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McKenzie, R. (1990). Residually Small Varieties Revisited. In: Almeida, J., Bordalo, G., Dwinger, P. (eds) Lattices, Semigroups, and Universal Algebra. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-2608-1_20
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DOI: https://doi.org/10.1007/978-1-4899-2608-1_20
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