Kaad's pure-state separation conjecture for Hilbert -modules
Kaad's pure-state separation conjecture for Hilbert -modules
Let be a -algebra, let be a Hilbert -module over , and let be a closed -submodule of . For a state on , write for the canonical map to the Hilbert-space localization, and let denote the state space of . Kaad's pure-state separation conjecture. In this situation, there exist a pure state and an element such that is not in the closure of . In particular, there exists a pure state such that is not dense in , and hence
The conjecture concerns strengthening the corresponding separation theorem from states to pure states; the source context says that Kaad and Lesch provided a positive answer, so the conjecture is treated as solved.
Sources & referencesView supporting material
Primary source
Rasoul Eskandari and Mohammad Sal Moslehian, “A separation theorem for Hilbert W^*-modules”, arXiv:2405.04850 (2024).
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