Coherent Conditions: Algebraic Geometry for Arbitrary Classes of Algebras
Universal algebraic geometry is generalised from solutions of equations in a single algebra to the study of $φ$- or $K$-spectra, akin to the prime spectrum of a ring. We explore their basic properties and constructions, give a correspondence between certain quantifier-free propositions and closed sets in the Zariski topology of a free algebra, and show the connection with current UAG. Lastly, equationally Noetherian classes and irreducible spectra are explored.
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