46Jxx Commutative Banach algebras and commutative topological

46J05  General theory of commutative topological algebras
46J10  Banach algebras of continuous functions, function algebras,
               See also {46E25}
46J15  Banach algebras of differentiable or analytic functions,
               ${H}^p$-spaces, See also {30D55, 30H05, 32A35,
               32A37, 32E25, 42B30}
46J20  Ideals, maximal ideals, boundaries
46J25  Representations of commutative topological algebras
46J30  Subalgebras
46J40  Structure, classification of commutative topological
               algebras
46J45  Radical Banach algebras
46J99  None of the above but in this section