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How to restrict a quadratic form to a sublattice

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• lattices
• QuadraticForm

asked 2012-11-14 16:12:29 +0200

Paul Johnson
1 ●1 ●1

updated 2019-08-29 18:36:23 +0200

FrédéricC
5125 ●3 ●43 ●111

If I have quadratic form, is there an easy way to find what the quadratic form is when restricted to a (finite index) sublattice?

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