Math 2.0

General algebraic systems Terms, identities and equational logic Concept

Inherently nonfinitely based algebra

Summary

A finite algebra is inherently nonfinitely based when no locally finite variety that contains it is finitely based. This is a strong and robust way of failing to be finitely based: it passes to every finite algebra whose variety contains the given one. It gives a convenient tool to show that many finite algebras, such as some finite semigroups, are not finitely based.

Further reading

  1. Web https://en.wikipedia.org/wiki/Variety_(universal_algebra)
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