Questions and Answers in General Topology

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Questions and Answers in General Topology

A Journal Devoted to General Topology and Related Fields

ISSN : 0918-4732
Commenced publication 1983. Two issues per volume, one volume per year.
Published by Symposium of General Topology

Audience

Topologists working in general topology and related areas.

Aims and Scope

Questions and Answers in General Topology (abbreviation Q&A) is an international journal devoted primarily to rapid publication of questions and answers that arise from research in general topology and related areas.

Editorial Boad

Managing Editors: Yasunao Hattori, Hisao Kato, Takemi Mizokami and Kohzo Yamada
Advisers: N. Aoki, T. Hoshina, T. Ishii, Y. Katuta, R. Nakagawa, T. Noiri, A. Okuyama, S. Sakai, T. Tanaka
Editors: K. Chiba, N. Kemoto, A. Koyama, T. Nogura, H. Ohta, M. Sakai, K. Tamano, H. Tanaka, Y. Tanaka, J. Terasawa, Y. Yajima, K. Yamazaki, Y. Yasui, K. Yokoi

Instructions to Authors

Questions and Answers in General Topology (abbreviation 'Q&A') was founded by Jun-iti Nagata in 1983. Q&A is an international journal devoted primarily to rapid publication of questions and answers that arise from research in general and geometric topology including set-theoretic topology, topological algebras, theory of continua, topological dynamics and related fields.

Contributions, which should be in English, can be submitted to one of the following managing editors.

Yasunao Hattori
Department of Mathematics
Shimane University
Matsue, 690-8504 JAPAN
hattori at riko.shimane-u.ac.jp

Hisao Kato
Institute of Mathematics
University of Tsukuba
Tsukuba, 305-8571 JAPAN
hisakato at sakura.cc.tsukuba.ac.jp

Takemi Mizokami
Department of Mathematics
Joetsu University of Education
Joetsu, 943-8512 JAPAN
mizokami at juen.ac.jp

Kohzo Yamada
Department of Mathematics
Faculty of Education
Shizuoka University
Shizuoka, 422-8529 JAPAN
eckyama at ipc.shizuoka.ac.jp

The editorial office strongly encourages to submit a paper electronically by attaching the pdf and text files of the submitting paper to an email message. The paper should be preferred by LaTeX. Notice that the authors do not use any individual macros. The information in the body of the email message should include the authors' full names, the full title of the paper. The authors should keep a hard copy of the submitted paper for the safety. If the author can not submit electronically, two duplicate copies together with the original manuscript are necessary, and the author should keep a complete copy.

No page charge is made. Each author of the accepted paper will get a pdf file of his paper free of charge, and reprints can be obtained at his cost.

'Q&A' is divided into two parts, Part Q (Questions) and Part A (Answers).
1. Papers to be submitted to Part Q should contain open questions (question), enough backgrounds of the proposed questions and reasonable references to help readers who might work on the questions. However, the questions themselves need not be new. Because an aim of this journal is to give publicity to questions that were proposed before somewhere else, without attracting much attention, while it welcomes presentation of new questions as well.
2. Papers submitted to Part A should contain answers (answer) to questions (question) that were proposed before in 'Q&A' or elsewhere. The results must be new, and the answers should be accompanied by proofs. However, in some instances, proofs may be merely outlined, and details may be published elsewhere.
3. Submitted papers will be refereed for their merit.
Manuscripts should be initiated with a title and author's name, and contain the mailing (postal) address as well as the email address. The manuscripts should also contain a short abstract, a list of keywords and phrases and the AMS Mathematics Subject Classification. 'References' should be listed alphabetically and the manuscripts should be written following the style of papers in the recent 'Q & A'.
The length of manuscript should not exceed 25 pages.
The contributor is encouraged to make it clear in the first page of his paper whether he intends to publish the contents of his paper in a more detailed form elsewhere or not.

Subscription Information

Please send your subscription order and the back numbers request to our agent below:

Japan Publications Trading Co., Ltd.
Book Export II Department
1-2-1 Sarugaku-cho, Chiyoda-ku
Tokyo 101-0064, Japan
Tel: +81-3-3292-3753
Fax: +81-3-3292-0410
Email: serials@jptco.co.jp

Volume 13, Issue No. 1 (1995)

Part Q (Questions)

F.G. Arenas, Disconnecting mappings and transfinite dimension
M. Oudadess, Pseudo-Banach structure in m-convex algebras
A.V. Arhangel'skii and G. Tironi, Stratifiable topological spaces
H. Poppe, On locally defined topological notions
B.K. Papadopoulos, A note on the paper "Quasi uniform convergence on function spaces"
J.M. Aldaz, On Tau-smooth measures and Lindelof dense subsets
A.V. Arhangel'skii, A few observations and questions on local compactness in C_p-theory

Part A (Answers)

J. Dontchev, On point generated spaces
J. Chen, L. Li and G. Ren, Order consistent topology and its applications
J. Dontchev, An answer to a question of Ganster, Noiri and Reilly
S.G. Popvassilev, Hereditarily semiregular, compact T₁ space that is not Hausdorff
H.A. Künzi, On quasi-uniform convergence and quiet spaces
J. Schroder, Impossible thin dense sets
J. van Mill and R. Pol, Remark on products of 1-dimensional compacta
S. Nitta, An answer to a question of McCoy and Santoro

Volume 13, Issue No. 2 (1995)

Part Q (Questions)

S. Garcia-Ferreira, V.I. Malykhin and A. Tamariz-Mascarua, Solutions and problems on convergence structures to ultrafilters
H. Chen and M. Dai, Spaces with feebly compactness
J. Dovos, A survey on metric preserving functions
V.I. Malykhin, Two sorts of topologies
R.A. McCoy and I. Ntantu, Properties of C(X) with the weak epi-topology

Part A (Answers)

J. Dontchev, Grant's question on generalized graphs
F.G. Arenas, Transfinite dimension and rings of continuous functions
S. Romaguera, An example on quasi-uniform convergence and quiet spaces
V. Basmanov, Covariant topological functors and their extensions
S.G. Popvassilev, Principle A^tau
S.G. Popvassilev, Principle A^tau, II
L.D. Kocinac, On the cardinality of Urysohn spaces
D.N. Georgiou, A note on a question of Y.Hattori
P.J. Szeptycki, Dense subsets of product spaces
H.H. Hung, A companion to the double sequences theorem of Nagata

Volume 14, Issue No. 1 (1996)

Part Q (Questions)

C. Dorsett, The semi open set generated topology
J.J. Charatonik, Problems on generalized homogeneity of some continua
C. Liu and Y. Tanaka, Spaces with certain compact-countable k-networks, and questions
T. Ishii, On strict w-compactifications
A.V. Arhangel'skii and J. Tartir, A characterization of compactness by relative separation property
F.G. Arenas, Topological properties preserved by proper subspaces
F.G. Arenas, Transfinite extensions of the covering dimension and order of functions

Part A (Answers)

K. Morita, Products of normal spaces with complete metric spaces
C.R. Borges and A.C. Wehrly, Another study of D-spaces
J. Dontchev and D. Rose, An ideal approach to submaximality
B. Karaivanov, On the commutability between hyperspaces and subspaces
F. Chen, Shrinking in products
G. Nordo, A note on perfectification of mappings
J. Cao, Answers to two questions of Paradopoulos
I. Kortezov, Two covering properties and cardinal functions

Volume 14, Issue No. 2 (1996)

Part Q (Questions)

I.M.H. Cho, Isocompactness of weakly star reducible spaces
F.G. Arenas and S. Romaguera, Dimension of quasi-metrizable bitopological spaces
A. Bella, A couple of questions concerning cardinal invariants
H.P. Künzi and V.I. Malykhin, Maximal resolvability of families of bounded subsets
A. Bella and V.I. Malykhin, Martin's axiom and completeness

Part A (Answers)

S. Miklos, The existence of proper local homeomorphisms of certain continua
N. Zhong, Effective separation axioms
F.G. Arenas and M.L. Puertas, A transfinite extension of a dimension of Mack and Pears
G.D. Faulkner and M.C. Vipera, Sequentially compact extensions
I. Kortezov, Cardinal inequalities using weak spread and cellularity
Y. Tanaka and S. Xia, Certain s-images of locally separable metric spaces
C.R. Borges, Extensions of real-valued functions
M.J. Pérez-Penalver and S. Romaguera, On right K-completeness of the fine quasi-uniformity
A.V. Arhangel'skii, On monolithic compactifications

Volume 15, Issue No. 1 (1997)

Part Q (Questions)

F.G. Arenas, J. Dontchev and M. Ganster, On \lambda-sets and dual of generalized continuity
Z. Piotrowski and E.J. Wingler, On Sierpinski's theorem on the determination of separately continuos functions
J. Valuyeva, On relative dimension concepts
C. Pan, Monotonically cp spaces
S.A. Peregudov, On pair-finite closure-preserving covers

Part A (Answers)

H.Z. Hdeib, On a question of Hdeib
H.H. Hung, Annihilators, \kappa-metric and metrizability
X. Lin, DCPO's for which the Scott open filter topology is T₀
G.D. Maio and L. Hola, A hypertopology determined by the family of totally bounded set is the infimum of upper Wijsman topologies
A. Bella, On the number of compact, H-closed and H-sets in a Hausdorff space
J. Dontchev and M. Ganster, On the product of LC-spaces

Volume 15, Issue No. 2 (1997)

Part Q (Questions)

F.G. Arenas, Essential and stable mappings and transfinite dimension
J.J. Charatonik and W.J. Charatonik, On mapping with the Eilenberg property
M.V. Matveev, Some questions on property (a)
V.I. Malykhin, Some results and problems cocerning Borel resolvability
M. Ganster and A. Kanibir, On pairwise S-closed spaces
D.N. Georgiou, and B.K. Papadopoulos, A note on the finest splitting topology
F.G. Arenas and M.L. Puertas, Transfinite rank dimension
F.G. Arenas, On Sierpinski theorem

Part A (Answers)

E. Moiseyev, On an internal characterization of AR-spaces
R.Z. Buzjakova, A criterion that a pseudocompact space condenses onto a compact space
G. Preuss, Precompactness and compactness in the natural function spaces of the category of semiuniform convergence spaces
M. Timm, A note on two of Miklos' question
X. Lin and S. Yujing, On core compactness of semilattices and frames with the Scott open filter topology
A.B. Raha and H. Sarbadhikari, Test spaces for covering properties
D. Buhagiar, Paracompact maps
N. Zhong, Effective collectionwise Hausdorff and normal axioms
A. Caterino, Compactfications and generalized semilattice homomorphisms
G.D. Maio, L.Hola and D.Holy, A characterization of locally compact spaces by epiconvergence and convergence in epitopology
J. Dontchev and H. Maki, On sg-closed sets and semi-\lambda-closed sets

Volume 16, Issue No. 1 (1998)

Part Q (Questions)

Y. Wu, Z. Gao and Y. Tanaka, Theory of g-metrizable spaces
J.P. Coleman, On weaker notions of scattered

Part A (Answers)

A. Fedeli, On two questions related to H-sets
Y. Ikeda and Y. Tanaka, Closed projections
M. Ganster and A. Kanibir, An answer to a question of Dorsett
J. Dontchev and M. Ganster, Codense ideals, local $\tau$-compactness and three questions of Rose and Hamlett
I.J. Tree, In search of a perfect pseudocompact space that is not separable
A. Bella and I.V. Yaschenko, Short note on products of pseudoradial spaces and a conjecture of Simon and Tironi
D. Buhagiar and T. Miwa, Covering properties of maps
M.A. Natsheh, On pseudocompactness of hyperspaces
M.G. Charalambous, A note on transfinite inductive dimension

Correction

C.R. Borges and A.G. Wehrly, Another study of D-spaces

Vol. 16, Issue No. 2 (1998)

Part Q (Questions)

M. Bonanzinga, Star-Lindelof and absolutely star-Lindelof spaces
V.I. Malykhin, A new view on old ploblems
Z. Gao, Metrizability of some generalized metric spaces in terms of g-functions
J.J. Charatonik and W.J.Charatonik, Questions on induced universal mappings
P. Pyrih, A space where disjoint open sets have disjoint closures

Part A (Answers)

Z. Boudhraa, Some properties of relatively finite spaces.
V. Tzannes, On countable first countable connected Hausdorff spaces.
J. Dontchev and M.Ganster, A decomposition of almost rc-Lindelof spaces.
I. Kortezov, Spaces with finite separation index.
S. Romaguera, On cofinally complete spaces.
R. Ayala, M.J. Chavez, A. Marquez and A. Quintero, On the proper planarity of 3-connected Peano continua
J. Valuyera, A remark on combinatorics of open covers and C_p-spaces
M. Sioen, The Cech-Stone compactification for Hausdorff uniform approach spaces is of Wallman-Shanin-type
M.A. Natsheh, A sufficient condition for a hyperspace to be pseudocompact
L.D. Kocinac, A bitopological view of some cardinal invariants
T. Ishii, Products of S₂ spaces with S₃ spaces
H.H. Hung, Metrizability beyond g-functions.

Volume 17, Issue No. 1 (1999)

Part Q (Questions)

S. Garcia-Ferreira and W. Just, Some remarks on the \gamma_p-property
M. G. Charalambous, A note on the relations between fractal and topological dimensions
F. Obersnel, Some questions on pseudoradial compactifications
I. Garrido and J. A. Jaramillo, On the converse of Tietze-Urysohn's extension theorem

Part A (Answers)

S. Garcia-Ferreira and W. Just, Two examples of relatively pseudocompact spaces
I. V. Bludora and G. Nordo, On the posets of all the Hausdorff and all the Tychonoff compactifications of mappings
A. Fedeli, On strongly functionally disconnected spaces
P. Pyrih, Each absolute and point of an atriodic irreducible continuum is an end point
J. Dontchev and M. Ganster, An answer to a question of Coleman on scattered sets
I. Kortezov, Fragmentability and cardinal identities
Y. Ziqiu and Z. Jianping, On a question about \aleph-spaces
J. Hou, A note on the Fell topology
O. Zindulka, A nowhere dense set is deeply nowhere dense
C. Yu-Qing, Note on two questions of Arhangelskii
A. V. Odinokov and B. A. Pasynkov, On the large inductive dimension of topological products
J. Li, S. Jiang and Y. Tanaka, Point-countable k-networks and maps
P. Pyrih, Separation and irreducible continua
J. Dontchev, An answer to a question of Pyrih
C. M. Pareek, Spaces in which disjoint open sets have disjoint closures

Correction

D. Buhagiar, Correction in - "Paracompact maps"

Vol. 17, Issue No. 2 (1999)

Part Q (Questions)

M. V. Matveev, Some more on nearly metaLindelöf spaces
A. Fedeli and A. Miranda, On strongly functionally disconnected spaces II
J. Cobb, Which spaces support leakly teepees?
F. Cammaroto and M. V. Matveev, A question on common fixed points
S. A. Peregudov, On pseudocompactness and other covering properties
A. M. Mohamad, On spaces with quasi-regular-G_\delta-diagonals
Y. Yasui, Results on relatively countably paracompact spaces

Part A (Answers)

J. Hou, Locally finite topology on the family of all closed subsets of a topological spaces
A. Bella and V. I. Malykhin, On certain subsets of a group
O. T. Alas and R. G. Wilson, Dense subspaces of first countable Hausdorff spaces
M. Saleh, Some applications of \delta-sets to H-closed spaces
N. Shimane, On being \sigma-spaces of mapping spaces
L. Peng, Characterizations for H-sets, countably H-bounded sets and countably H-sets
J. Schröder, Some answers concerning submaximal spaces
F. G. Arenas and M. L. Puertas, A new approach to transfinite dimension
P. Pyrih, T. Bárta, D. Opela and R. Sáamal, A continuum where absolute terminality and HU-terminality coincide
J. Charatonik and P. Pyrih, Continua with light open mappings
A. V. Arhangel'skii, On P-spaces, extremal disconnectedness, and some results of J. R. Isbell and V. I. Malychin
Y. Ikeda, \sigma-strong networks and quotient compact images of metric spaces

Volume 18, No. 1 (2000)

Part Q (Questions)

M.V. Matveeb and S. Shkarin, Some questions on topological homogeneity
J. Dontchev, I. Arokiarani and K. Balachandran, On generalized \delta-closed sets and almost weakly Hausdorff spaces
J. Dontchev, M. Ganster and L. Zsilinszky, Extremally T_1-spaces and related spaces
A. Fedeli and A. Le Donne, Connectifications and open components
J.J. Charatonik and W.J. Charatonik, Remarks on induced universal mappings
Y. Ziqiu and Y. Wenxing, Metrizable, Lasnev, \sigma-spaces and g-functions
H.H. Hung, Metrizability beyond g-functions II

Part A (Answers)

D.D. Caprio and E. Meccariello, Notes on separation axioms in hyperspaces
Y. Song, On some questions on star-covering properties
G. Ying, On spaces with a \sigma-locally finite universal cs-network
A. Fedeli and A. Le Donne, On subconnected spaces
G. Ying, Remarks on CF families
J.J. Charatonik, Remarks on atomic mappings
Z. Yang, A method constructing Hausdorff spaces without property (WA)
G. Nordo and B.A. Pasynkov, On trivially metrizable mappings

Corrections

M.G. Charalambous, Correction to the paper "A note on the relations between fractal and topological dimensions"

Volume 18, No. 2 (2000)

Part Q (Questions)

J. Brendle, W. Just and C. Laflamme, On the refinement and countable refinement numbers
Z. Balogh, H. Bennett, D. Burke, G. Gruenhage, D. Lutzer and J. Mashburn, OIF spaces
D. Buhagiar and I. Yoshioka, Sieves and complete properties
J. Li, A question paralleling to Michael-Nagami problem
J. Charatonik, On chainable continua with almost unique hyperspace
F.G. Arenas and M.I. Puertas, Transfinite Krull dimension

Part A (Answers)

P. Pyrih, An example of self-homeomorphic dendrite not strongly self-homeomorphic
I. Tsereteli, On a dimension-like function and its behavior under continuous mapping of special spaces
C.M. Pareek, More on star Cech complete spaces
S. Sakai, Some remarks on |C(X)|
D. Opela, P. Pyrih and R. Samal, An example of openly minimal dendrite
I. Tsereteli, On the one-to-one continuous mappings of special spaces
I. Bludova, On absolutely bounded trivially metrizable mappings
I. Tsereteli and L. Zambakhidze, Axiomatic characterizations of dimension in special class of spaces
J.L. Blasco, On the representation of function spaces as spaces of restrictions of continuous functions
A. Fedeli and A. Le Donne, \omega-connectifications and product spaces
H.Z. Hdeib and M.S. Sarsak, On strongly Lindelof spaces
Y. Ziqiu, On separable sequential spaces and \sigma-hcp k-networks
M.V.Matveev, Answering a question on relative countable paracompactness

Based on information submitted by Jun-iti Nagata and Y. Hattori.
Revised January 9, 1996; May 8, 1997; February 3, 1998; April 7, 1998; November 5, 1998; April 7, 2000; December 28, 2000; June 3, 2008.