Geodesic
$C^\ast$-algebras of operators in non-archimedean Hilbert spaces
Commentationes Mathematicae Universitatis Carolinae, Tome 33 (1992) no. 4, pp. 573-580 Cet article a éte moissonné depuis la source Czech Digital Mathematics Library

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We show several examples of n.a\. valued fields with involution. Then, by means of a field of this kind, we introduce ``n.a\. Hilbert spaces'' in which the norm comes from a certain hermitian sesquilinear form. We study these spaces and the algebra of bounded operators which are defined on them and have an adjoint. Essential differences with respect to the usual case are observed.
We show several examples of n.a\. valued fields with involution. Then, by means of a field of this kind, we introduce ``n.a\. Hilbert spaces'' in which the norm comes from a certain hermitian sesquilinear form. We study these spaces and the algebra of bounded operators which are defined on them and have an adjoint. Essential differences with respect to the usual case are observed.
Classification : 46C05, 46L05, 46S10, 47S10
Keywords: non-archimedean Hilbert space; non-archimedean $C^\ast $-algebra 
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Alvarez, J. Antonio. $C^\ast$-algebras of operators in non-archimedean Hilbert spaces. Commentationes Mathematicae Universitatis Carolinae, Tome 33 (1992) no. 4, pp. 573-580. http://geodesic.mathdoc.fr/item/CMUC_1992_33_4_a0/

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