Mathematical Sciences Classification System
46Hxx - Topological algebras, normed rings and algebras, Banach algebras 
{For group algebras, convolution algebras and measure algebras, see  43A10,  43A20}
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                            46H05General theory of topological algebras
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                            46H10Ideals and subalgebras
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                            46H15Representations of topological algebras
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                            46H20Structure, classification of topological algebras
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                            46H25
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                            46H30Functional calculus in topological algebras [See also 47A60]
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                            46H35Topological algebras of operators [See mainly 47Lxx]
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                            46H40Automatic continuity
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                            46H70
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                            46H99None of the above, but in this section