Fuzzy Sets and Systems 54 (1993) 361-367 36 l North-Holland

BULLETIN

Editorial

An excellent response from researchers and con- ference organizers makes this an interesting edition of the bulletin; with research reports from India, China, Austria and Bulgaria and an all too rare (in these pages) conference report. I was pleased to see that two of the conferences announced herein will be held in the UK; so I might just get along.

With all the research announced in the Bulletin, I wonder if any of the readers ever wonder what the Editor does. Well, I earn my living as an information technology consultant with BIS, a large systems house. Currently my main research interests are in object- oriented analysis and design and I have developed a method called SOMA which includes a notion of fuzzy objects and fuzzy classification although this is not its main purpose. I am also working on some minor theoretical problems in object-oriented data manage- ment. The work on fuzzy objects is published in a book called Object-Oriented Methods (Addison Wesley, 1991) though I am a little dismayed to note that no-one has sent a review of this work to the bulletin yet.

Dr. Atanassov has asked me to announce that the Bulgarian Publishing House (Diograph) will be pub- lishing his book Intuitionistic Fuzzy Sets in mid 1993.

lan Graham January 1993

Research Reports

A Note on the Work o f Madras-based Researchers in Fuzzy Sets and Systems

The group of researchers in Fuzzy Systems based il Madras are working in the Ramanujan Institute fo. Advanced Study in Mathematics, University of Madras, Madras 600 005, India and in the Department of Mathe- matics, Indian Institute of Technology, Madras 600036. Workers in the former institution are: Mrs. Clementina Felbin Kennedy and Mr. S. Sampath Kumar. Mrs. Clem- entina Felbin is interested in the analysis of fuzzy systems with two of her papers having been published (Fuzzy Sets and Systems 48 (1992) 239-248); J. Math. Anal AppL (to appear). Her study is to see how far classical results of functional analysis extend to fuzzy systems. So far it looks that the classical results continue to hold but the proof of the analogues is quite non-trivial and involves more often intricate analysis. The pub- lished work relates to fuzzy completion of fuzzy normed linear spaces and fuzzy completeness of finite dimen-

sional fuzzy normed linear spaces. Mrs. Felbin has submitted a thesis for Ph.D. of the University of Madras in which fuzzy completion of fuzzy Hilbert spaces and properties of fuzzy linear operators are also considered. Mr. S. Sampath Kumar works on fuzzy topology. His main concern is about fuzzy bitopological spaces. Some of his results relating to fuzzy pairwise alpha continuity and fuzzy pairwise precontinuity are to appear in Fuzzy Sets and Systems. He has a paper on weakly continuous mappings in fuzzy bitopological spaces accepted by the First Tamil Science Congress in which he participated recently. His unpublished work relates to semi- continuity, irresoluteness, semi-openness, almost con- tinuity, beta continuity, beta openness, etc., in fuzzy bitopological spaces.

The members of the group in the Indian Institute of Technology, Madras, lead by Dr. P.V. Subrahmanyam, concentrate on fuzzy fixed point theory. The initial work in this topic was contained in the Ph.D. thesis of Dr. A. Chitra approved by the Indian Institute of Technology, Madras. Some of the results in the thesis were later published in J. Math. Anal. Appl. 19 and Fuzzy Sets and Systems 19 (1986) 305-308. Mr. S.K. Sudarsanam, Dr. P. Veeramani and Mr. A. George have now joined the members of the group here. While the first one is studying fuzzy analysis, the others are studying fuzzy metric spaces further. The group is planning to have monthly meetings in the near future.

C. Felbin 'Penial, A.P. 782 Anna Nagar Madras 600 040 /ndia

Research at Delh i Univers i ty

Ever since we have started research work in fuzzy topology and fuzzy algebraic structures, the fuzzy com- munity at Delhi University is getting larger and larger day by day. A pleasing feature of the popularity of fuzzy set theory is that, more and more young talent is attracted towards this aspect of mathematics due to its applications and utility.

Two notable additions in the fuzzy community are of Prof. K.C. Gupta and Mr. Suryansu Ray. Moreover, Dr. Shashi Prabha Arya and Dr. Tegh Bhadur Singh are also guiding research students towards their Ph.D degrees in fuzzy mathematics.

Presently, my group is involved in the investigations of fuzzy topological spaces, fuzzy topological groups, fuzzy groups and other fuzzy algebraic structures; re-

0165-0114/93/$06.00 ~ 1993---Eisevier Science Publishers B.V. (North-Holland)