Abstract
We show that a test space consisting of nonzero vectors of a quadratic spaceE and of the set all maximal orthogonal systems inE is algebraic iffE is Dacey or, equivalently, iffE is orthomodular. In addition, we present another orthomodularity criteria of quadratic spaces, and using the result of Solèr, we show that they can imply thatE is a real, complex, or quaternionic Hilbert space.
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Dvurečenskij, A. Test spaces and characterizations of quadratic spaces. Int J Theor Phys 35, 2093–2106 (1996). https://doi.org/10.1007/BF02302229
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DOI: https://doi.org/10.1007/BF02302229