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OP-8674Status unassessedGeometry and topology

The Brauer group · Question 4

Deformation theory, patching, quadratic forms, and the Brauer group · Historical workshop question

Editorial mapping of AIMPL source category: Algebraic geometry. http://aimpl.org/deformationbrauer/ Not an author-supplied MSC code.

Historical list · status unassessedAs of 2026-09-08Source & evidence ↓

Problem statement

When is Br⁡(X)=Br′⁡(X)\operatorname{Br}(X) = \operatorname{Br'}(X)?

Lean 4

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Background

Workshop introduction

This problem list begin during discussions at the AIM workshop “Deformation theory, patching, quadratic forms, and the Brauer group” in January, 2011.

Progress & source assessment

Historical workshop record. Current open/solved status has not been independently reassessed.

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References
  1. [1]Deformation theory, patching, quadratic forms, and the Brauer group link

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