×

Smooth \(p\)-order ideals in non-unital ordered normed spaces. (English) Zbl 1477.46019

Summary: We introduce smooth \(p\)-order ideals \((1\le p\le \infty)\) to initiate the studies of ideals in non-unital ordered normed spaces. We obtain some order-theoretic properties and examples of these ideals. Furthermore, we show that every semi-\(M\)-ideal in affine space \(A(K)\) is smooth \(\infty \)-order ideal. Moreover, we derive that every smooth 1-order ideal is an \(L\)-summand in order smooth 1-normed space.

MSC:

46B40 Ordered normed spaces
46B04 Isometric theory of Banach spaces
Full Text: DOI

References:

[1] Alfsen, EM, Compact Convex Sets and Bounded Integrals (1971), Berlin: Springer, Berlin · Zbl 0209.42601 · doi:10.1007/978-3-642-65009-3
[2] Alfsen, EM; Andersen, TB, Split faces of compact convex sets, Proc. Lond. Math. Soc., 21, 415-442 (1970) · Zbl 0207.12204 · doi:10.1112/plms/s3-21.3.415
[3] Alfsen, EM; Effros, EG, Structure in real Banach spaces I and II, Ann. Math., 96, 98-173 (1972) · Zbl 0248.46019 · doi:10.2307/1970895
[4] Ghatak, A.; Karn, A., Quantization of \(A_0(K)\)-spaces, Oper. Matrices, 14, 381-399 (2020) · Zbl 1476.46028 · doi:10.7153/oam-2020-14-28
[5] Ghatak, A.; Karn, A., \(CM\)-ideals and \(L^1\)-matricial split faces, Acta Sci. Math. (Szeged), 85, 2019, 659-679 (2019) · Zbl 1449.46013 · doi:10.4232/actasm-019-259-6
[6] Ghatak, A.; Karn, A., \(M\)-ideals and split faces of the quasi state space of a non-unital ordered Banach spaces, Positivity, 3, 413-429 (2019) · Zbl 1420.46023 · doi:10.1007/s11117-018-0614-1
[7] Harmand, P., Werner, D., Werner, W.: \(M\)-ideals in Banach spaces and Banach algebras. Lecture Notes in Mathematics, 1547, Springer, Berlin (1993) · Zbl 0789.46011
[8] Heinrich, S., Ultraproducts in Banach space theory, J. Reine Angew. Math., 27, 72-104 (1978) · Zbl 0412.46017
[9] Jameson, G. J. O.: Ordered Linear Spaces. Lecture Notes No. 141, Springer, Berlin (1970) · Zbl 0196.13401
[10] Kumar, A.; Karn, AK, Isometries of absolute order unit spaces, Positivity, 24, 1263-1277 (2020) · Zbl 1476.46029 · doi:10.1007/s11117-019-00731-y
[11] Karn, AK, Orthogonality in \(\rm C^*\)-algebras, Positivity, 20, 3, 607-620 (2016) · Zbl 1361.46017 · doi:10.1007/s11117-015-0375-z
[12] Karn, AK, Order embedding of a matrix ordered space, Bull. Aust. Math. Soc., 84, 1, 10-18 (2011) · Zbl 1252.46053 · doi:10.1017/S000497271100222X
[13] Karn, AK, Orthogonality in \(\ell^p\)-spaces and its bearing on ordered Banach spaces, Positivity, 18, 2, 223-234 (2014) · Zbl 1314.46026 · doi:10.1007/s11117-013-0242-8
[14] Karn, AK, A \(p\)-theory of ordered normed spaces, Positivity, 14, 441-458 (2010) · Zbl 1225.46014 · doi:10.1007/s11117-009-0029-0
[15] Lima: Intersection properties of balls and subspaces in Banach spaces. Trans. Am. Math. Soc. 227, 1-62 (1977) · Zbl 0347.46017
[16] Paulsen, VI; Tomforde, M., Vector spaces with an order unit, Indiana Univ. Math. J., 58, 1319-1359 (2009) · Zbl 1211.46016 · doi:10.1512/iumj.2009.58.3518
[17] Pisier, G., Non-Commutative \(L^p\)-Spaces, 1459-1517 (2003), Amsterdam: North-Holland, Amsterdam · Zbl 1046.46048
[18] Størmer, E., On partially ordered vector spaces and their duals, with applications to simplexes and \({\rm C}^*\)-algebras, Proc. Lond. Math. Soc., 18, 245-265 (1968) · Zbl 0162.44002 · doi:10.1112/plms/s3-18.2.245
[19] Wong, YC; Ng, KF, Partially Ordered Topological Vector Spaces (1973), Oxford: Oxford University Press, Oxford · Zbl 0269.46007
This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.