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The Discriminant of a Cubic Surface

W. L. Edge
Proceedings of the Royal Irish Academy. Section A: Mathematical and Physical Sciences
Vol. 80A, No. 1 (1980), pp. 75-78
Published by: Royal Irish Academy
Stable URL: http://www.jstor.org/stable/20489083
Page Count: 4
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The Discriminant of a Cubic Surface
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Abstract

The discriminant of a quaternary cubic form, of degree 32 in the coefficients, was obtained as a polynomial in four invariants of the form by Salmon (1861 "Phil. Trans. R. Soc." 150, 229-239). There appears to be an incorrect numerical multiplier and the error has persisted through the several editions of his treatise. This paper offers a correction.

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