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Suppose B is a unital algebra which is an algebraic product of full matrix algebras over an index set X. A bijection is set up between the equivalence classes of irreducible representations of B as operators on a Banach space and the σ-complete ultrafilters on X (Theorem 2.6). Therefore, if X has less than measurable cardinality (e.g. accessible), the equivalence classes of the irreducible representations of B are labeled by points of X, and all representations of B are described (Theorem 3.3).
Daniele Guido, and Lars Tuset. "Representations of the direct product of matrix algebras." Fundamenta Mathematicae 169.2 (2001): 145-160. <http://eudml.org/doc/282363>.
@article{DanieleGuido2001, abstract = {Suppose B is a unital algebra which is an algebraic product of full matrix algebras over an index set X. A bijection is set up between the equivalence classes of irreducible representations of B as operators on a Banach space and the σ-complete ultrafilters on X (Theorem 2.6). Therefore, if X has less than measurable cardinality (e.g. accessible), the equivalence classes of the irreducible representations of B are labeled by points of X, and all representations of B are described (Theorem 3.3).}, author = {Daniele Guido, Lars Tuset}, journal = {Fundamenta Mathematicae}, keywords = {Banach algebras; irreducible representation; -complete ultrafilter}, language = {eng}, number = {2}, pages = {145-160}, title = {Representations of the direct product of matrix algebras}, url = {http://eudml.org/doc/282363}, volume = {169}, year = {2001}, }
TY - JOUR AU - Daniele Guido AU - Lars Tuset TI - Representations of the direct product of matrix algebras JO - Fundamenta Mathematicae PY - 2001 VL - 169 IS - 2 SP - 145 EP - 160 AB - Suppose B is a unital algebra which is an algebraic product of full matrix algebras over an index set X. A bijection is set up between the equivalence classes of irreducible representations of B as operators on a Banach space and the σ-complete ultrafilters on X (Theorem 2.6). Therefore, if X has less than measurable cardinality (e.g. accessible), the equivalence classes of the irreducible representations of B are labeled by points of X, and all representations of B are described (Theorem 3.3). LA - eng KW - Banach algebras; irreducible representation; -complete ultrafilter UR - http://eudml.org/doc/282363 ER -