Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-26T00:42:21.787Z Has data issue: false hasContentIssue false

Geometry relevant to the binary quintic

Published online by Cambridge University Press:  20 January 2009

W. L. Edge
Affiliation:
Montague House, 67 Mill Hill, Musselburgh, EH21 7RL, Scotland
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The aim in this paper is to indicate one way of interpreting covariants of a binary quintic F geometrically, interpretations having been found recently [7] for its quadratic covariant 2C2, called Γ in [7], and its invariant I4. The symbol dCn will denote a covariant of order n in the binary variables x, y and degree d in the coefficients of F, Id being used in preference to dI0 for invariants. The sum d + n is 4 for both 2C2 and I4, and no other covariant affords as small a sum; so it is natural to have begun by interpreting these two and to use them as auxiliaries in interpreting others.

Type
Research Article
Copyright
Copyright © Edinburgh Mathematical Society 1987

References

REFERENCES

1.Baker, H. F., Symbolical algebra and the quadrics containing a rational curve. Proc. Edinburgh Math. Soc. (1) 44 (1926), 131143.CrossRefGoogle Scholar
2.Cayley, A., A second memoir on quantics, Phil. Trans. Roy. Soc. 146 (1856), 101126.Google Scholar
Collected Papers II, 250275.Google Scholar
3.Cayley, A., Numerical Tables supplementary to the second memoir on quantics, Collected Papers II, 282309.Google Scholar
4.Cayley, A., A third memoir on quantics, Phil. Trans. Roy. Soc. 146 (1856), 627647.Google Scholar
Collected Papers II, 310335.Google Scholar
5.Clebsch, A., Theorie der binären algebraischen Formen (Leipzig: B. G. Teubner, 1872).Google Scholar
6.Clifford, W. K., On the classification of loci, Phil. Trans. Roy. Soc. 169 (1879), 663;Google Scholar
Math. Papers (London, 1882), 305.Google Scholar
7.Edge, W. L., An aspect of the invariant of degree 4 of the binary quintic, Proc. Edinburgh Math. Soc. (2) 29 (1986), 133140.CrossRefGoogle Scholar
8.Elliott, E. B., An Introduction to the Algebra of Quantics (Oxford, Clarendon Press, 1913).Google Scholar
9.Grace, J. H. and Young, A., The Algebra of Invariants (Cambridge, University Press, 1903).Google Scholar
10.Hilbert, D., Über eine Darstellungsweise der invarianten Gebilde im binären Formengebiete; Math. Annalen 30 (1887) 1529;CrossRefGoogle Scholar
Gesammelte Abhandlungen II, 102116.Google Scholar
11.Marletta, G., Sulle curve razionali del quinto ordine, Palermo Rendiconti 19 (1905), 94119.CrossRefGoogle Scholar
12.Salmon, G., Lessons Introductory to the Modern Higher Algebra (Dublin; Hodges, Foster & Co., 1876).Google Scholar
13.Sylvester, J. J., A synoptical table of the irreducible invariants and covariants to a binary quintic, with a scholium on a theorem in conditional hyperdeterminants. Amer. J. Math. 1 (1878), 370378;CrossRefGoogle Scholar
Collected Mathematical Papers I, 210217.Google Scholar
14.Sylvester, J. J., On the complete system of the “Grundformen” of the binary quantic of the ninth order. Amer. J. Math. 2 (1879), 9899;CrossRefGoogle Scholar
Collected Mathematical Papers III, 218.Google Scholar
15.Todd, J. A., The geometry of the binary quintic form, Proc. Cambridge Phil. Soc. 40 (1944), 15.CrossRefGoogle Scholar