A034786 Number of linearly ordered Girard monoids of size n; number of t-norms on an n-chain inducing an involutive residual negator.

1, 1, 1, 2, 3, 7, 12, 31, 59, 161, 329, 944, 2067, 6148, 14558, 44483, 116372

Offset

1,4

References

M. Nachtegael, The Dizzy Number of Fuzzy Implication Operators on Finite Chains, in "Fuzzy Logic and Intelligent Technologies for Nuclear Science and Industry", ed. Ruan D., Abderrahim H., D'hondt P., Kerre E., 1998, pp. 29-35.

Links

Table of n, a(n) for n=1..17.

Index entries for sequences related to monoids

Crossrefs

Cf. A030453.

Sequence in context: A186009 A299295 A305752 * A080107 A056156 A112837

Adjacent sequences: A034783 A034784 A034785 * A034787 A034788 A034789

Keyword

nonn

Author

Bernard De Baets (Bernard.DeBaets(AT)rug.ac.be), Mike Nachtegael (mike.nachtegael(AT)rug.ac.be)

Status

approved