sage

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gh-37082: Fix NumberFieldElement_quadratic.is_integral() when D is not square-free Fixes #34800. The current implementation of is_integral() assumes that D is square-free. We implement the check for integrality of the trace and norm in a way that works for general D. URL: https://github.com/sagemath/sage/pull/37082 Reported by: Peter Bruin Reviewer(s): Travis Scrimshaw