| 41. | Boolean algebra is isomorphic to the Boolean algebra of all subsets of a finite set.
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| 42. | Being defined by identities, MV-algebras form a Boolean algebras.
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| 43. | The analogous result holds beginning with a Boolean algebra.
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| 44. | Recall that filters on sets are proper filters of the Boolean algebra of its powerset.
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| 45. | The variety of Boolean algebras constitutes a famous example.
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| 46. | Boolean algebra is isomorphic to the Boolean algebra of all subsets of a finite set.
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| 47. | Thus every Boolean ring becomes a Boolean algebra.
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| 48. | The only further axiom Boolean algebra requires is:
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| 49. | Hence the periodic sequences form a Boolean algebra.
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| 50. | This Boolean algebra is unique up to isomorphism.
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