Uriya A. First

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20132026

most citedRings That Are Morita Equivalent to Their Opposites

12 citations · 82 across the 30 of their papers we have counts for

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math.RA2014

Witt's Extension Theorem for Quadratic Spaces over Semiperfect Rings

Uriya A. First

We prove that every isometry of between (not-necessarily orthogonal) summands of a unimodular quadratic space over a semiperfect ring can be extended an isometry of the whole quadr…

math.RA2014★ 1 cited

An Elementary Proof That Rationally Isometric Quadratic Forms Are Isometric

Uriya A. First

Let $R$ be a valuation ring with fraction field $K$ and $2 \in R^{\times}$ . We give an elementary proof of the following known result: Two unimodular quadratic forms over $R$ are isom…