Zeros of Pairs of Quadratic Forms
classification
🧮 math.NT
keywords
formspairsquadraticapproximationargumentcentrescolliot-thelenedefined
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We prove the Hasse principle and weak approximation for varieties defined over number fields by the nonsingular intersection of pairs of quadratic forms in 8 variables. The argument develops work of Colliot-Thelene, Sansuc and Swinnerton-Dyer, and centres on a purely local problem about forms which split off 3 hyperbolic planes.
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