# Partially additive states on orthomodular posets

Colloquium Mathematicae (1991)

- Volume: 62, Issue: 1, page 7-14
- ISSN: 0010-1354

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topTkadlec, Josef. "Partially additive states on orthomodular posets." Colloquium Mathematicae 62.1 (1991): 7-14. <http://eudml.org/doc/210102>.

@article{Tkadlec1991,

abstract = {We fix a Boolean subalgebra B of an orthomodular poset P and study the mappings s:P → [0,1] which respect the ordering and the orthocomplementation in P and which are additive on B. We call such functions B-states on P. We first show that every P possesses "enough" two-valued B-states. This improves the main result in [13], where B is the centre of P. Moreover, it allows us to construct a closure-space representation of orthomodular lattices. We do this in the third section. This result may also be viewed as a generalization of [6]. Then we prove an extension theorem for B-states giving, as a by-product, a topological proof of a classical Boolean result.},

author = {Tkadlec, Josef},

journal = {Colloquium Mathematicae},

keywords = {extension of states; orthomodular poset; partially additive state; representation; compact Hausdorff closure space; Stone representation; Boolean algebra},

language = {eng},

number = {1},

pages = {7-14},

title = {Partially additive states on orthomodular posets},

url = {http://eudml.org/doc/210102},

volume = {62},

year = {1991},

}

TY - JOUR

AU - Tkadlec, Josef

TI - Partially additive states on orthomodular posets

JO - Colloquium Mathematicae

PY - 1991

VL - 62

IS - 1

SP - 7

EP - 14

AB - We fix a Boolean subalgebra B of an orthomodular poset P and study the mappings s:P → [0,1] which respect the ordering and the orthocomplementation in P and which are additive on B. We call such functions B-states on P. We first show that every P possesses "enough" two-valued B-states. This improves the main result in [13], where B is the centre of P. Moreover, it allows us to construct a closure-space representation of orthomodular lattices. We do this in the third section. This result may also be viewed as a generalization of [6]. Then we prove an extension theorem for B-states giving, as a by-product, a topological proof of a classical Boolean result.

LA - eng

KW - extension of states; orthomodular poset; partially additive state; representation; compact Hausdorff closure space; Stone representation; Boolean algebra

UR - http://eudml.org/doc/210102

ER -

## References

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- [9] R. Mayet, Une dualité pour les ensembles ordonnés orthocomplémentés, C. R. Acad. Sci. Paris Sér. I 294 (1982), 63-65. Zbl0484.06002
- [10] R. Mayet, Varieties of orthomodular lattices related to states, Algebra Universalis 20 (1985), 368-396. Zbl0581.06006
- [11] P. Pták, Extensions of states on logics, Bull. Polish Acad. Sci. Math. 33 (1985), 493-497. Zbl0589.03040
- [12] P. Pták, Weak dispersion-free states and the hidden variables hypothesis, J. Math. Phys. 24 (1983), 839-840. Zbl0508.60006
- [13] N. Zierler and M. Schlessinger, Boolean embeddings of orthomodular sets and quantum logic, Duke Math. J. 32 (1965), 251-262. Zbl0171.25403

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