<p>In this paper, we show that every monadic ortholattice is isomorphic to a functional one, thereby resolving a recent question posed by Harding. We then study certain substitution-free reducts of the polyadic ortholattices, which we call <i>locally finite</i> <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(\sigma \)</EquationSource> <EquationSource Format="MATHML"><math> <mi>σ</mi> </math></EquationSource> </InlineEquation>-<i>free polyadic ortholattices</i>, and demonstrate that they stand in a one-to-one correspondence with the locally finite diagonal-free cylindric ortholattices.</p>

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Functional monadic ortholattices and locally finite \(\sigma \)-free polyadic ortholattices

  • Chun-Yu Lin,
  • Joseph McDonald

摘要

In this paper, we show that every monadic ortholattice is isomorphic to a functional one, thereby resolving a recent question posed by Harding. We then study certain substitution-free reducts of the polyadic ortholattices, which we call locally finite \(\sigma \) σ -free polyadic ortholattices, and demonstrate that they stand in a one-to-one correspondence with the locally finite diagonal-free cylindric ortholattices.