Some results in quasitopological homotopy groups
Abstract
UDC 515.4
We show that the $n$th quasitopological homotopy group of a topological space is isomorphic to $(n-1)$th quasitopological homotopy group of its loop space and by this fact we obtain some results about quasitopological homotopy groups. Finally, using the long exact sequence of a based pair and a fibration in qTop introduced by Brazas in 2013, we obtain some results in this field.
References
A. Arhangelskii, M. Tkachenko, Topological groups and related structures, Atlantis Stud. Math. (2008), https://doi.org/10.2991/978-94-91216-35-0 DOI: https://doi.org/10.2991/978-94-91216-35-0
H. J. Belloa, M. J. Chascoa, X. Domnguezb, M. Tkachenko, Splittings and cross-sections in topological groups, J. Math. Anal. and Appl., 435, № 2, 1607 – 1622 (2016), https://doi.org/10.1016/j.jmaa.2015.11.040 DOI: https://doi.org/10.1016/j.jmaa.2015.11.040
D. Biss, The topological fundamental group and generalized covering spaces, Topology and Appl., 124, № 3, 355 – 371(2002), https://doi.org/10.1016/S0166-8641(01)00247-4 DOI: https://doi.org/10.1016/S0166-8641(01)00247-4
J. Brazas, The fundamental group as topological group, Topology and Appl., 160, № 1, 170 – 188 (2013), https://doi.org/10.1016/j.topol.2012.10.015 DOI: https://doi.org/10.1016/j.topol.2012.10.015
J. Brazas, The topological fundamental group and free topological groups, Topology and Appl., 158, № 6, 779 – 802 (2011).
J. Brazas, Homotopy mapping spaces, Thesis (Ph.D.) – Univ. New Hampshire, ProQuest LLC, Ann Arbor, MI, 213 pp. (2011).
J. S. Calcut, J. D. McCarthy, Discreteness and homogeneity of the topological fundamental group, Topology Proc., 34, 339 – 349 (2009).
P. Fabel, Multiplication is discontinuous in the Hawaiian earring group (with the quotient topology), Bull. Pol. Acad. Sci. Math., 59, № 1, 77 – 83 (2011), https://doi.org/10.4064/ba59-1-9 DOI: https://doi.org/10.4064/ba59-1-9
P. Fabel, Compactly generated quasi-topological homotopy groups with discontinuous multiplication, Topology Proc., 40, 303 – 309 (2012).
H. Ghane, Z. Hamed, B. Mashayekhy, H. Mirebrahimi, Topological homotopy groups, Bull. Belg. Math. Soc. Simon Stevin 15, № 3, 455 – 464 (2008).
T. Nasri, B. Mashayekhy and H. Mirebrahimi, On quasitopological homotopy groups of inverse limit spaces, Topology Proc., 46, 145 – 157 (2015).
A. Pakdaman, H. Torabi, B. Mashayekhy, On $H$-groups and their applications to topological fundamental groups, preprint, arXiv:1009.5176v1.
Joseph J. Rotman, An introduction to algebraic topology, Grad. Textx in Math., 119, Springer-Verlag (1988), https://doi.org/10.1007/978-1-4612-4576-6 DOI: https://doi.org/10.1007/978-1-4612-4576-6
R. M. Switzer, Algebraic topology homotopy and homology, Springer-Verlag (1975). DOI: https://doi.org/10.1007/978-3-642-61923-6
H. Torabi, A. Pakdaman, B. Mashayekhy, Topological fundamental groups and small generated coverings, Math. Slovaca, 65, № 5, 1 – 12 (2011), https://doi.org/10.1515/ms-2015-0079 DOI: https://doi.org/10.1515/ms-2015-0079
Z. Virk, Small loop spaces, Topology and Appl., 157, № 2, 451 – 455 (2010)б https://doi.org/10.1016/j.topol.2009.10.003 DOI: https://doi.org/10.1016/j.topol.2009.10.003
H. Wada, Local connectivity of mapping space, Duke Math. J., 22, № 3, 419 – 425 (1955).
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