cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-2 of 2 results.

A354494 Number of semi-unital quantales on n elements, up to isomorphism.

Original entry on oeis.org

1, 1, 6, 64, 939, 17578, 403060, 11327795, 440735463
Offset: 1

Views

Author

Arman Shamsgovara, May 28 2022

Keywords

Comments

For definition of quantale see A354493.
A quantale is semi-unital if for all elements x: x <= x * T and x <= T * x, where T is the top element of the underlying lattice.

References

  • P. Eklund, J. G. García, U. Höhle, and J. Kortelainen, (2018). Semigroups in complete lattices. In Developments in Mathematics (Vol. 54). Springer Cham.
  • K. I. Rosenthal, Quantales and their applications. Longman Scientific and Technical, 1990.
  • Arman Shamsgovara, A catalogue of every quantale of order up to 9 (abstract, to appear), LINZ2022, 39th Linz Seminar on Fuzzy Set Theory, Linz, Austria.

Crossrefs

Cf. A354493, A354495.

A357294 Number of integral quantales on n elements, up to isomorphism.

Original entry on oeis.org

1, 1, 2, 9, 49, 364, 3335, 37026, 496241
Offset: 1

Views

Author

Arman Shamsgovara, Sep 22 2022

Keywords

Comments

For definition of quantale see A354493.
A quantale is integral if the top element in the underlying lattice is a unit element. Equivalently, it is both unital and balanced. Equivalently, it is both strictly left-sided and strictly right-sided.

References

  • P. Eklund, J. G. García, U. Höhle, and J. Kortelainen, (2018). Semigroups in complete lattices. In Developments in Mathematics (Vol. 54). Springer Cham.
  • K. I. Rosenthal, Quantales and their applications. Longman Scientific and Technical, 1990.
  • Arman Shamsgovara, A catalogue of every quantale of order up to 9 (abstract), LINZ2022, 39th Linz Seminar on Fuzzy Set Theory, Linz, Austria.
  • Arman Shamsgovara and P. Eklund, A Catalogue of Finite Quantales, GLIOC Notes, December 2019.

Crossrefs

Cf. A354493, A354495, A354497, A357295.
Showing 1-2 of 2 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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