On quadratic forms isotropic over the function field of a conic

by Markus Rost (3 pages)

Math. Ann. 288 (1990), no. 3, 511-513.

MR 1079875, Zbl 0698.12009.

This note contains a short proof of the fact that the function field of a curve of genus 0 is excellent in the sense of quadratic form theory.

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