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scientific article; zbMATH DE number 803186
| Language | Label | Description | Also known as |
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| English | No label defined |
scientific article; zbMATH DE number 803186 |
Statements
8 October 1995
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quadratic forms
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numerical invariants of fields
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level of a field
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non-formally real fields
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anisotropic quadratic form
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formally real fields
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\(u\)-invariants
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Pythagoras number
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existence of \(K\)-rational points for systems of forms
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homogeneous Nullstellensatz for \(p\)-fields
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Borsuk-Ulam Theorem
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spheres
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Tsen-Lang theory of \(C_ i\)-fields
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computation of the levels of projective spaces
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Witt rings
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