Journal of Mathematical Analysis and Applications ( IF 1.3 ) Pub Date : 2021-04-29 , DOI: 10.1016/j.jmaa.2021.125284 Antonio M. Peralta
Let M and N be unital Jordan-Banach algebras, and let and denote the sets of invertible elements in M and N, respectively. Suppose that and are clopen subsets of and , respectively, which are closed for powers, inverses and products of the form . In this paper we prove that for each surjective isometry there exists a surjective real-linear isometry and an element in the McCrimmon radical of N such that for all . Assuming that M and N are unital JB⁎-algebras we establish that for each surjective isometry the element is a unitary element in N and there exist a central projection and a complex-linear Jordan ⁎-isomorphism J from M onto the -homotope such that for all . Under the additional hypothesis that there is a unitary element in N satisfying , we show the existence of a central projection and a complex-linear Jordan ⁎-isomorphism Φ from M onto N such that for all .
中文翻译:
Jordan一旦Jordan-Banach代数中可逆元素集之间的射影同构。
令M和N为单一的Jordan-Banach代数,并令 和 分别表示M和N中的可逆元素集。假设 和 是...的闭合子集 和 分别是封闭的,用于幂,逆和形式的乘积 。在本文中,我们证明对于每个射影等距 存在一个实射实线性等距 和一个元素 在的McCrimmon自由基Ñ使得 对所有人 。假设M和N是单位JB⁎-代数,我们确定对于每个射影等距 元素 是N中的一个element元,并且有一个中心投影和一个复杂的线性约旦⁎ -isomorphism Ĵ从中号到-同型 这样 对所有人 。在附加假设下,存在一个单一元素在N中令人满意,我们展示了一个中心投影的存在 和一个复杂的线性约旦⁎从-isomorphismΦ中号到Ñ使得 对所有人 。