Richard Elman, Nikita Karpenko and Alexander Merkurjev, The Algebraic and Geometric Theory of Quadratic Forms, Chapter V §31¶
Richard Elman, Nikita Karpenko and Alexander Merkurjev, *The Algebraic and Geometric Theory of Quadratic Forms*, Chapter V §31. The Algebraic and Geometric Theory of Quadratic Forms.
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Domain-specific¶
- Quadratically Closed Field
- The word complex matters: the field of real constructible numbers lacks a square root of −1 and is not quadratically closed.
This sourceAuthors' manuscript identifies the complex constructible field with the quadratic closure of Q and gives the ordinary Witt-ring statement.
- The word complex matters: the field of real constructible numbers lacks a square root of −1 and is not quadratically closed.
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