Unit-free contractive projection theorems for C⁎-, JB⁎-, and JB-algebras
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DOI: 10.1016/j.jmaa.2020.123921
Abstract: Abstract We prove that, if A is a (possibly non-unital) non-commutative J B ⁎ -algebra, and if π : A → A is a positive contractive linear projection, then π ( A ) , endowed… read more here.
Keywords: algebra; commutative algebra; bicontractive linear; linear projections ... See more keywords