We consider the class of decreasing (G) spaces introduced by Collins and Roscoe and address the question as to whether it coincides with the class of decreasing (A) spaces. We provide a partial solution to this problem (the answer is yes for homogeneous spaces). We also express decreasing (G) as a monotone normality type condition and explore the preservation of decreasing (G) type properties under closed maps. The corresponding results for decreasing (A) spaces are unknown.
@article{119055, author = {Ian Stares}, title = {Decreasing (G) spaces}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {39}, year = {1998}, pages = {809-817}, zbl = {1060.54508}, mrnumber = {1715469}, language = {en}, url = {http://dml.mathdoc.fr/item/119055} }
Stares, Ian. Decreasing (G) spaces. Commentationes Mathematicae Universitatis Carolinae, Tome 39 (1998) pp. 809-817. http://gdmltest.u-ga.fr/item/119055/
Topological spaces with point-networks, Proc. Amer. Math. Soc. 94 (1985), 497-501. (1985) | MR 0787901 | Zbl 0584.54024
A study of monotonically normal spaces, Proc. Amer. Math. Soc. 38 (1973), 211-214. (1973) | MR 0324644 | Zbl 0257.54018
Criteria for metrisability, Proc. Amer. Math. Soc. 90 (1984), 631-640. (1984) | MR 0733418 | Zbl 0541.54034
A lattice of conditions on topological spaces, Proc. Amer. Math. Soc. 94 (1985), 487-496. (1985) | MR 0787900 | Zbl 0562.54043
General Topology, Heldermann Verlag, Berlin, 1989. | MR 1039321 | Zbl 0684.54001
A note concerning the Collins, Reed, Roscoe, Rudin metrization theorem, Topology Appl. 74 (1996), 73-82. (1996) | MR 1425927 | Zbl 0883.54028
Well-ordered (F) spaces, Topology Proc. 17 (1992), 111-130. (1992) | MR 1255798 | Zbl 0797.54038
Spaces with bases satisfying certain order and intersection properties, Pacific J. Math. 66 (1976), 455-476. (1976) | MR 0445452 | Zbl 0354.54016
A lattice of conditions on topological spaces II, Fund. Math. 138 (1991), 69-81. (1991) | MR 1124537 | Zbl 0745.54008
Acyclic monotone normality, Topology Appl. 47 (1992), 53-67. (1992) | MR 1189992 | Zbl 0801.54018
Concerning the Dugundji extension property, Topology Appl. 63 (1995), 165-172. (1995) | MR 1330686 | Zbl 0833.54016