REMARKS AND QUESTIONS ON BASE POSITIONAL DIMENSION-LIKE FUNCTIONS OF THE TYPE IND
Year 2013,
Volume: 1 Issue: 1, 9 - 17, 01.06.2013
Dimitrios N. Georgıou
Athanasios C.megarıtıs
Abstract
Let Q be a subset of a space X. A family A of open subsets ofX is said to be a p-base for Q in X if the set {Q ∩ U : U ∈ A} is a base forthe subspace Q. In [12] base positional dimension-like functions of the typeind were introduced. The domain of these functions is the class of all p-bases.These functions were studied only with respect to the property of universality.Here, we study these functions with respect to other standard properties ofdimension theory and we present questions concerning these functions
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- University of Patras, Department of Mathematics, 265 04 Patras, Greece E-mail address: georgiou@math.upatras.gr Technological Educational Institute of Messolonghi, Department of Accounting, 30200 Messolonghi, Greece
- E-mail address: megariti@master.math.upatras.gr
Year 2013,
Volume: 1 Issue: 1, 9 - 17, 01.06.2013
Dimitrios N. Georgıou
Athanasios C.megarıtıs
References
- Alexandroff, P., Diskrete R¨aume. Mat. Sb. (N.S.) 2 (1937), 501-518.
- Chigogidze, A., Inductive dimensions for completely regular spaces. Comment. Math. Univ. Carolinae 18 (1977), no. 4, 623-637.
- Chigogidze, A., Relative dimensions. (Russian) General topology, 67-117, 132, Moskov. Gos. Univ., Moscow, 1985.
- Engelking, R., Theory of dimensions, finite and infinite, Sigma Series in Pure Mathematics, Heldermann Verlag, Lemgo, 1995. viii+401 pp.
- Georgiou, D.N., Iliadis, S.D. and Megaritis, A.C., On positional dimension-like functions. Topology Proc. 33 (2009), 285-296.
- Georgiou, D.N., Iliadis, S.D. and Megaritis, A.C., Dimension-like functions of the type dim and universality. Topology Appl. 156 (2009), no. 18, 3077-3085.
- Georgiou, D.N., Iliadis, S.D. and Megaritis, A.C., On some positional dimension-like func- tions. Topology Proc. 36 (2010), 337-352.
- Georgiou, D.N., Iliadis, S.D. and Megaritis, A.C., Positional dimension-like functions of the type Ind. Topology Appl. 158 (2011), no. 15, 2056-2065.
- Georgiou, D.N. and Megaritis, A.C., On the relative dimensions dim* and dim I. Questions Answers Gen. Topology. 29 (2011), no. 1, 1-16.
- Georgiou, D.N. and Megaritis, A.C., On the relative dimensions dim* and dim II. Questions Answers Gen. Topology. 29 (2011), no. 1, 17-29.
- Hart, K.P., Jun-iti Nagata and Vaughan, J.E., Encyclopedia of general topology, Elsevier Science Publishers, B.V., Amsterdam, 2004. x+526 pp.
- Iliadis, S.D., Universal spaces and mappings, North-Holland Mathematics Studies, 198. El- sevier Science B.V., Amsterdam, 2005. xvi+559 pp.
- Kuratowski, K. and Mostowski, A., Set Theory, With an introduction to descriptive set the- ory, Studies in Logic and the Foundations of Mathematics, Vol. 86. North-Holland Publish- ing Co., Amsterdam-New York-Oxford; PWN—Polish Scientific Publishers, Warsaw, 1976. xiv+514 pp.
- Pears, A.R., Dimension theory of general spaces, Cambridge University Press, Cambridge, England-New York-Melbourne, 1975. xii+428 pp.
- Tkachuk, V.V., On the dimension of subspaces. Moscow Univ. Math. Bull. 36 (1981), no.2, 25
- Tkachuk, V.V., On the relative small inductive dimension. Moscow Univ. Math. Bull. 37 (1982), no.5, 25-29.
- Valuyeva, J., On relative dimension concepts, Q & A in General Topology, Vol. 15 (1997).
- University of Patras, Department of Mathematics, 265 04 Patras, Greece E-mail address: georgiou@math.upatras.gr Technological Educational Institute of Messolonghi, Department of Accounting, 30200 Messolonghi, Greece
- E-mail address: megariti@master.math.upatras.gr