Pour-El & Richards [3] discussed an ad hoc computability
structure in an effectively separable Hilbert space taking
as an effective generating set a slightly modified one from
the original orthonormal basis. We show that an application
of the Poincaré-Wigner orthogonalizing procedure to
Pour-El & Richards' modified system gives an orthonormal
effective generating set which yields a third computability
structure.
@article{1116443645,
author = {Yoshikawa, Atsushi},
title = {On an ad hoc computability structure in a Hilbert space},
journal = {Proc. Japan Acad. Ser. A Math. Sci.},
volume = {79},
number = {3},
year = {2003},
pages = { 65-70},
language = {en},
url = {http://dml.mathdoc.fr/item/1116443645}
}
Yoshikawa, Atsushi. On an ad hoc computability structure in a Hilbert space. Proc. Japan Acad. Ser. A Math. Sci., Tome 79 (2003) no. 3, pp. 65-70. http://gdmltest.u-ga.fr/item/1116443645/