| 1. | Every division ring is therefore a division algebra over its center.
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| 2. | The only non-associative division algebra is the algebra of octonions.
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| 3. | Because it is possible to divide quaternions, they form a division algebra.
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| 4. | See for example normed division algebras and Banach algebras.
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| 5. | The Brauer group arose out of attempts to classify division algebras over a field.
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| 6. | If, then cannot be a division algebra.
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| 7. | Associative division algebras have no zero divisors.
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| 8. | :There are useful algebras that have neither a norm nor that are division algebras.
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| 9. | Okubu's example was the algebra of 3 by 3 non-associative division algebra.
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| 10. | Shafarevich stated his theorem for local fields in terms of division algebras rather than the fundamental class.
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