Submission: 2016, Oct 21, revised: 2017, Oct 19
Given a central simple algebra with involution over an arbitrary field, étale subalgebras contained in the space of symmetric elements are investigated. The method emphasizes the similarities between the various types of involutions and privileges a unified treatment.
2010 Mathematics Subject Classification: 16H05, 16R50, 16W10
Keywords and Phrases:
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