Expansions of finite algebras and their congruence lattices

@article{DeMeo2012ExpansionsOF,
  title={Expansions of finite algebras and their congruence lattices},
  author={William DeMeo},
  journal={Algebra universalis},
  year={2012},
  volume={69},
  pages={257-278}
}
In this paper, we present a novel approach to the construction of new finite algebras and describe the congruence lattices of these algebras. Given a finite algebra $${\langle B_0, \ldots \rangle}$$, let $${B_1,B_2, \ldots , B_K}$$ be sets that either intersect B0 or intersect each other at certain points. We construct an overalgebra$${\langle A, FA \rangle}$$, by which we mean an expansion of $${\langle B_0, \ldots \rangle}$$ with universe $${A = B_0 \cup B_1 \cup \ldots \cup B_K}$$, and a… 

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