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Enumeration of Indices of given Altitude and Potency

Published online by Cambridge University Press:  20 January 2009

H. Minc
H. Minc
Affiliation:
The University of British Columbia, Vancouver, Canada
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Indices of the free logarithmetic correspond to bifurcating root-trees (cf.(4)), to Evans' non-associative numbers (3) and to Etherington's partitive numbers (2). The free commutative logarithmetic is the homomorph of f determined by the congruence relation P + Q ∼ Q + P. Formulæ for aδ and pα, i.e. the numbers of indices of of a given potency* δ and the number of indices of a given altitude α respectively, were given by Etherington (1), who also gave corresponding formulæ for commutative indices of . Other enumeration formulæ are contained in (5).

Type
Research Article
Information
Proceedings of the Edinburgh Mathematical Society , Volume 11 , Issue 4 , November 1959 , pp. 207 - 209
Copyright
Copyright © Edinburgh Mathematical Society 1959

References

REFERENCES

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