Weak selections and weak orderability of function spaces

Valentin Gutev

Czechoslovak Mathematical Journal (2010)

  • Volume: 60, Issue: 1, page 273-281
  • ISSN: 0011-4642

Abstract

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It is proved that for a zero-dimensional space X , the function space C p ( X , 2 ) has a Vietoris continuous selection for its hyperspace of at most 2-point sets if and only if X is separable. This provides the complete affirmative solution to a question posed by Tamariz-Mascarúa. It is also obtained that for a strongly zero-dimensional metrizable space E , the function space C p ( X , E ) is weakly orderable if and only if its hyperspace of at most 2-point sets has a Vietoris continuous selection. This provides a partial positive answer to a question posed by van Mill and Wattel.

How to cite

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Gutev, Valentin. "Weak selections and weak orderability of function spaces." Czechoslovak Mathematical Journal 60.1 (2010): 273-281. <http://eudml.org/doc/38006>.

@article{Gutev2010,
abstract = {It is proved that for a zero-dimensional space $X$, the function space $C_p(X,2)$ has a Vietoris continuous selection for its hyperspace of at most 2-point sets if and only if $X$ is separable. This provides the complete affirmative solution to a question posed by Tamariz-Mascarúa. It is also obtained that for a strongly zero-dimensional metrizable space $E$, the function space $C_p(X,E)$ is weakly orderable if and only if its hyperspace of at most 2-point sets has a Vietoris continuous selection. This provides a partial positive answer to a question posed by van Mill and Wattel.},
author = {Gutev, Valentin},
journal = {Czechoslovak Mathematical Journal},
keywords = {Vietoris hyperspace; continuous selection; function space; weakly orderable space; Vietoris hyperspace; continuous selection; function space; weakly orderable space},
language = {eng},
number = {1},
pages = {273-281},
publisher = {Institute of Mathematics, Academy of Sciences of the Czech Republic},
title = {Weak selections and weak orderability of function spaces},
url = {http://eudml.org/doc/38006},
volume = {60},
year = {2010},
}

TY - JOUR
AU - Gutev, Valentin
TI - Weak selections and weak orderability of function spaces
JO - Czechoslovak Mathematical Journal
PY - 2010
PB - Institute of Mathematics, Academy of Sciences of the Czech Republic
VL - 60
IS - 1
SP - 273
EP - 281
AB - It is proved that for a zero-dimensional space $X$, the function space $C_p(X,2)$ has a Vietoris continuous selection for its hyperspace of at most 2-point sets if and only if $X$ is separable. This provides the complete affirmative solution to a question posed by Tamariz-Mascarúa. It is also obtained that for a strongly zero-dimensional metrizable space $E$, the function space $C_p(X,E)$ is weakly orderable if and only if its hyperspace of at most 2-point sets has a Vietoris continuous selection. This provides a partial positive answer to a question posed by van Mill and Wattel.
LA - eng
KW - Vietoris hyperspace; continuous selection; function space; weakly orderable space; Vietoris hyperspace; continuous selection; function space; weakly orderable space
UR - http://eudml.org/doc/38006
ER -

References

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  1. García-Ferreira, S., Gutev, V., Nogura, T., Extensions of 2-point selections, New Zealand J. Math. 38 (2008), 1-8. (2008) MR2491681
  2. Gutev, V., 10.4064/fm196-3-4, Fund. Math. 196 (2007), 275-287. (2007) Zbl1129.54016MR2353859DOI10.4064/fm196-3-4
  3. Gutev, V., Nogura, T., 10.4995/agt.2001.2150, Appl. Gen. Topol. 2 (2001), 205-218. (2001) Zbl0993.54019MR1890037DOI10.4995/agt.2001.2150
  4. Gutev, V., Nogura, T., 10.1090/S0002-9939-01-05883-X, Proc. Amer. Math. Soc. 129 (2001), 2809-2815. (2001) Zbl0973.54021MR1838807DOI10.1090/S0002-9939-01-05883-X
  5. Gutev, V., Nogura, T., Selection problems for hyperspaces, Open Problems in Topology 2 (Elliott Pearl, ed.), Elsevier BV, Amsterdam (2007), 161-170. (2007) MR2367385
  6. Hrušák, M., Martínez-Ruiz, I., 10.4064/fm203-1-1, Fund. Math. 203 (2009), 1-20. (2009) MR2491778DOI10.4064/fm203-1-1
  7. Michael, E., 10.1090/S0002-9947-1951-0042109-4, Trans. Amer. Math. Soc. 71 (1951), 152-182. (1951) Zbl0043.37902MR0042109DOI10.1090/S0002-9947-1951-0042109-4
  8. Mill, J. {van}, Wattel, E., 10.1090/S0002-9939-1981-0627702-4, Proc. Amer. Math. Soc. 83 (1981), 601-605. (1981) MR0627702DOI10.1090/S0002-9939-1981-0627702-4
  9. Tamariz-Mascar{&apos;u}a, A., Continuous selections on spaces of continuous functions, Comment. Math. Univ. Carolin. 47 (2006), 641-660. (2006) MR2337419

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