Mathematical Sciences Classification System
08Bxx - Varieties
[See also 03C05]
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08B05Equational logic, Mal'cev (Mal'tsev) conditions
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08B10Congruence modularity, congruence distributivity
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08B15Lattices of varieties
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08B20Free algebras
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08B25Products, amalgamated products, and other kinds of limits and colimits [See also 18A30]
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08B26Subdirect products and subdirect irreducibility
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08B30Injectives, projectives
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08B99None of the above, but in this section