Does C* -embedding imply C*-embedding in the realm of products with a non-discrete metric factor?
Gutev, Valentin ; Ohta, Haruto
Fundamenta Mathematicae, Tome 163 (2000), p. 241-265 / Harvested from The Polish Digital Mathematics Library

The above question was raised by Teodor Przymusiński in May, 1983, in an unpublished manuscript of his. Later on, it was recognized by Takao Hoshina as a question that is of fundamental importance in the theory of rectangular normality. The present paper provides a complete affirmative solution. The technique developed for the purpose allows one to answer also another question of Przymusiński's.

Publié le : 2000-01-01
EUDML-ID : urn:eudml:doc:212442
@article{bwmeta1.element.bwnjournal-article-fmv163i3p241bwm,
     author = {Valentin Gutev and Haruto Ohta},
     title = {Does C* -embedding imply C*-embedding in the realm of products with a non-discrete metric factor?},
     journal = {Fundamenta Mathematicae},
     volume = {163},
     year = {2000},
     pages = {241-265},
     zbl = {0974.54010},
     language = {en},
     url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv163i3p241bwm}
}
Gutev, Valentin; Ohta, Haruto. Does C* -embedding imply C*-embedding in the realm of products with a non-discrete metric factor?. Fundamenta Mathematicae, Tome 163 (2000) pp. 241-265. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv163i3p241bwm/

[00000] [1] R. A. Aló and L. I. Sennott, Extending linear space-valued functions, Math. Ann. 191 (1971), 79-86. | Zbl 0198.28005

[00001] [2] R. A. Aló and L. I. Sennott, Collectionwise normality and the extension of functions on product spaces, Fund. Math. 74 (1972), 231-243. | Zbl 0245.54009

[00002] [3] R. Arens, Extension of coverings, of pseudometrics, and linear-space-valued mappings, Canad. J. Math. 5 (1953), 211-215.

[00003] [4] R. L. Blair and A. W. Hager, Extensions of zero-sets and of real-valued functions, Math. Z. 136 (1974), 41-52. | Zbl 0264.54011

[00004] [5] J. Dugundji, An extension of Tietze's theorem, Pacific J. Math. 1 (1951), 353-367. | Zbl 0043.38105

[00005] [6] T. E. Gantner, Extension of uniformly continuous pseudometrics, Trans. Amer. Math. Soc. 132 (1968), 147-157. | Zbl 0157.53501

[00006] [7] G. Gruenhage, Generalized metric spaces, in: Handbook of Set-Theoretic Topo- logy, K. Kunen and J. E. Vaughan (eds.), North-Holland, Amsterdam, 1984, 423-501.

[00007] [8] T. Hoshina, Spaces with a property related to uniformly local finiteness, Tsukuba J. Math. 6 (1982), 51-62. | Zbl 0543.54015

[00008] [9] T. Hoshina, Extensions of mappings II, in: Topics in General Topology, K. Morita and J. Nagata (eds.), North-Holland, Amsterdam, 1989, 41-80.

[00009] [10] T. Hoshina, Extensions of mappings, in: Recent Progress in General Topology, M. Hušek and J. van Mill (eds.), North-Holland, Amsterdam, 1992, 405-416. | Zbl 0798.54021

[00010] [11] T. Hoshina and K. Yamazaki, C*-embedding and C-embedding on products with certain metric factor, Topology Appl. 82 (1998), 195-204. | Zbl 0893.54010

[00011] [12] J. R. Isbell, Uniform Spaces, Amer. Math. Soc., Providence, RI, 1964. | Zbl 0124.15601

[00012] [13] T. Ishii and H. Ohta, Generalizations of C-embedding and their applications, Math. Japon. 23 (1978), 349-368. | Zbl 0405.54010

[00013] [14] F. Ishikawa, On countably paracompact spaces, Proc. Japan Acad. 31 (1955), 686-687. | Zbl 0066.41001

[00014] [15] M. Katětov, Extensions of locally finite coverings, Colloq. Math. 6 (1958), 145-151.

[00015] [16] K. Kunen, Set Theory. An Introduction to Independence Proofs, Stud. Logic Found. Math. 102, North-Holland, Amsterdam, 1983.

[00016] [17] K. Morita, Paracompactness and product spaces, Fund. Math. 50 (1962), 223-236. | Zbl 0099.17401

[00017] [18] K. Morita, Products of normal spaces with metric spaces, Math. Ann. 154 (1964), 365-382. | Zbl 0117.39803

[00018] [19] K. Morita, On generalizations of Borsuk's homotopy extension theorem, Fund. Math. 88 (1975), 1-6. | Zbl 0304.55009

[00019] [20] K. Morita and T. Hoshina, P-embedding and product spaces, ibid. 93 (1976), 71-80. | Zbl 0347.54009

[00020] [21] H. Ohta, Rectangular normality of products with a metric factor, RIMS Kôkyûroku 823 (1993), 106-117.

[00021] [22] T. C. Przymusiński, Collectionwise normality and extensions of continuous functions, Fund. Math. 98 (1978), 75-81. | Zbl 0382.54014

[00022] [23] T. C. Przymusiński, Extending functions from products with a metric factor and absolutes, Pacific J. Math. 101 (1982), 463-475. | Zbl 0491.54008

[00023] [24] T. C. Przymusiński, Notes on extendability of continuous functions from products with a metric factor, unpublished note, May 1983.

[00024] [25] T. C. Przymusiński, A solution to a problem of E. Michael, Pacific J. Math. 114 (1984), 235-242.

[00025] [26] T. C. Przymusiński and M. Wage, Collectionwise normality and extensions of locally finite coverings, Fund. Math. 109 (1980), 175-187. | Zbl 0443.54015

[00026] [27] M. E. Rudin and M. Starbird, Products with a metric factor, General Topology Appl. 5 (1975), 235-248.

[00027] [28] H. L. Shapiro, Extensions of pseudometrics, Canad. J. Math 18 (1966), 981-998. | Zbl 0158.41303

[00028] [29] M. Starbird, Extending maps from products, in: Studies in Topology, N. H. Stav- rakas and K. R. Allen (eds.), Academic Press, New York, 1975, 559-564.

[00029] [30] K. Yamazaki, C*-embedding and C-embedding on product spaces, Tsukuba J. Math. 21 (1997), 515-527. | Zbl 0887.54017