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Computing spinor equivalence for positive definite forms

Given an integral positive-definite rank $n$ quadratic form $f$, one can use the algorithm in Conway and Sloane (Chapter 15, SPLaG) to efficiently determine if the genus of $f$ contains more than one ...
a196884's user avatar
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1 answer
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Lower bounds on the rank of a unimodular lattice, given the binlinear pairing of a subset of basis vectors

I have some questions on lower bounds on the rank of unimodular lattices given the bilinear pairing of a subset of its basis is known. Let $\Lambda$ be an odd, unimodular matrix of signature $(1,T)$. ...
D. S. Park's user avatar