The John Knopfmacher Centre for Applicable Analysis and Number ...
The John Knopfmacher Centre for Applicable Analysis and Number ...
The John Knopfmacher Centre for Applicable Analysis and Number ...
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<strong>The</strong> <strong>John</strong> <strong>Knopfmacher</strong> <strong>Centre</strong> <strong>for</strong> <strong>Applicable</strong> <strong>Analysis</strong> <strong>and</strong><br />
<strong>Number</strong> <strong>The</strong>ory<br />
Visiting Researchers<br />
<strong>The</strong> in<strong>for</strong>mation below provides brief details about the various active <strong>and</strong> often distinguished research<br />
mathematicians who have visited the <strong>Centre</strong> <strong>for</strong> periods of one month or more, from 1992 until<br />
December 1996 . <strong>The</strong>y are listed in alphabetical order, per year. 1997 <strong>Centre</strong> Visitors are listed under<br />
the 1997 <strong>Centre</strong> Report.<br />
1992 Visitors<br />
Dr. A. DUBICKAS<br />
(Vilnius, Lithuania) Dates: Feb.\\ to Dec.\\, 1992. Dr. Dubickas is a very promising young <strong>Number</strong><br />
<strong>The</strong>orist, who was very strongly recommended to us by some outst<strong>and</strong>ing senior Russian<br />
mathematicians. He came here as a University Visiting Research Fellow <strong>for</strong> the whole of 1992,<br />
<strong>and</strong> his Fellowship was extended to 1993 as well.<br />
Prof. H. K\\"ONIG<br />
(S rbr\\"ucken, Germany) Dates: March/April, 1992. Prof. K\\"onig is a well known expert on<br />
functional analysis, whose research interests tie in particularly with those of Dr. Labuschagne.<br />
Prof. HONG CHANG LEE<br />
(Chung--Li, Taiwan) Dates: 15th June to 15th Sept., 1992. Prof. Lee is a number--theorist who<br />
visited the <strong>Centre</strong> under the auspices of the FRD s S.A.--Taiwan Scientists Exchange Programme.<br />
Prof. D. LEVIATAN<br />
(Tel Aviv, Israel) Dates: 15th June to 31st Aug.\\, 1992. Prof. Leviatan is a specialist in<br />
approximation theory who collaborated particularly with Profs. Lubinsky <strong>and</strong> Driver.<br />
Prof. M.E. MAYS<br />
(Charlottesville, Virginia, U.S.A.) Dates: 15th May to 15th June, 1992. Prof. Mays is an expert on<br />
number theory <strong>and</strong> combinatorics, with research interests in common with Profs. A. <strong>and</strong> J.<br />
<strong>Knopfmacher</strong>, in particular.<br />
Prof. R. MENNICKEN<br />
(Regensburg, Germany) Dates: 20th Jan.\\ to 20th Feb.\\, 1992. Prof. Mennicken is a<br />
distinguished authority on partial differential equations, who does joint research with Prof.<br />
Faierman <strong>and</strong> Dr. M\\"oller, in particular.<br />
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Prof. F. MORICZ<br />
(Szeged, Hungary) Dates: 1st March to 10th April, 1992. Prof. Moricz is an expert on orthogonal<br />
series.<br />
Prof. J.--L. NICOLAS<br />
(Lyon, France) Dates: March/April, 1992. Prof. Nicolas is an eminent authority on analytic number<br />
theory, whose research interests mesh closely with those of Profs. A. <strong>and</strong> J. <strong>Knopfmacher</strong>.<br />
Prof. K. OSKOLKOV<br />
(Kingston, Canada) Dates: July/Aug.\\, 1992. Prof. Oskolkov who was <strong>for</strong>merly from the Steklov<br />
Institute, Russia, is a specialist on trigonometric series.<br />
Prof. V. TOTIK<br />
(Szeged, Hungary) Dates: April/May, 1992. Prof. Totik is a distinguished expert on approximation<br />
theory, who has various research interests <strong>and</strong> publications in common with Profs. Lubinsky <strong>and</strong><br />
Driver.<br />
Prof. H. WALLIN<br />
(Ume\\ , Sweden) Dates: 15th June to 15th Aug.\\, 1992. Prof. Wallin is an eminent specialist in<br />
approximation theory who has common research interests with Prof. Lubinsky in particular.<br />
Prof. R. WARLIMONT<br />
(Regensburg, Germany) Dates: Jan.\\ to April, 1992. Prof. Warlimont is a distinguished specialist<br />
in analytic number theory, with several research interests <strong>and</strong> publications in common with Profs.<br />
A. <strong>and</strong> J. <strong>Knopfmacher</strong>.<br />
1993 Visitors<br />
Prof. Z. DITZIAN<br />
(Edmonton, Canada) Dates: Nov.\\ to Dec.\\, 1993. Prof. Ditzian is an expert on approximation<br />
theory. He has coauthored a basic monograph on the subject. He worked with Prof. Lubinsky.<br />
Dr. A. DUBICKAS<br />
(Vilnius, Lithuania) Dates: Jan.\\ to Dec., 1993. Dr. Dubickas completed the second year of his<br />
University Visiting Research Fellowship be<strong>for</strong>e returning to Lithuania.<br />
Dr. H. GINGOLD<br />
(Morgantown, West Virigina) Dates: July 1993. Prof. Gingold is an expert on various<br />
combinatorial/number theory problems. He worked with Prof. A. <strong>Knopfmacher</strong>.<br />
Dr. SHING--WHU JHA<br />
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(Chung-Li, Taiwan) Dates: June to Aug.\\, 1993. Dr. Jha is an expert on orthogonal polynomials<br />
<strong>and</strong> collaborated with Prof. Lubinsky. He visited under the FRD s S.A./Taiwan Scientists<br />
Exchange Programme.<br />
Prof. H. LANGER<br />
(Vienna, Austria) Dates: Oct.\\ 1993. Prof. Langer worked with Prof. Faierman, Dr. M\\"oller, <strong>and</strong><br />
other visitors Prof. Mennicken <strong>and</strong> Shkalikov.<br />
Prof. A.L. LEVIN<br />
(Tel Aviv, Israel) Dates: Jan.\\ to Feb.\\, 1993. Prof. Levin is an expert on approximation theory,<br />
<strong>and</strong> continued his long--st<strong>and</strong>ing collaboration with Prof. Lubinsky during his visit.<br />
Prof. L. LUCHT<br />
(Clausthal--Zellerfeld, Germany) Dates: Feb.\\ to May, 1993. Prof. Lucht is an expert on number<br />
theory <strong>and</strong> function theory. He collaborated with Profs. A. <strong>and</strong> J. <strong>Knopfmacher</strong>.<br />
Dr. R. LUNDELIUS<br />
(Yale, Stan<strong>for</strong>d) Dates: July to Dec.\\, 1993. Dr. Lundelius was very highly recommended by<br />
leading mathematicians at Stan<strong>for</strong>d University. He came as a University Visiting Research Fellow,<br />
<strong>and</strong> his fellowship was extended to 1994/5.<br />
Prof. R. MENNICKEN<br />
(Regensburg, Germany) Dates: Oct.\\ 1993. Prof. Mennicken is president of GAMM <strong>and</strong> a leading<br />
applied mathematician. He is writing a book with Dr. M. M\\"oller <strong>and</strong> this visit was part of the<br />
process.<br />
Prof. B. RICHMOND<br />
(Morgantown, West Virginia) Dates: Jan.\\ 1993. Prof. Richmond is an expert on combinatorics.<br />
He collaborated with Prof. A. <strong>Knopfmacher</strong>.<br />
Prof. A. SHKALIKOV<br />
(Moscow, Russia) Dates: Sept.\\ 1993. Prof. Shkalikov worked with Dr. M\\"oller, Prof. Faierman,<br />
Prof. Mennicken, <strong>and</strong> Prof. Langer.<br />
Prof. R. WARLIMONT<br />
(Regensburg, Germany) Dates: Feb.\\ to May, 1993. Prof. Warlimont is an expert on analytic<br />
number theory. He worked mainly with Profs. A. <strong>and</strong> J. <strong>Knopfmacher</strong>.<br />
1994 Visitors<br />
Prof. A. CUYT<br />
(Antwerp, Belgium) Dates: July/Aug.\\ 1994. Prof. Cuyt is an expert on Pad\\ e approximations<br />
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who worked in particular with Profs. Lubinsky <strong>and</strong> Driver.<br />
Prof. S. KANEMITSU<br />
(Fukuoka, Japan) Dates: Feb.\\ 1994 Prof. Kanemitsu is a specialist in analytic number theory,<br />
with research interests in common with Profs. A. <strong>and</strong> J. <strong>Knopfmacher</strong>.<br />
Prof. A.L. LEVIN<br />
(Tel--Aviv, Israel) Dates: Aug.\\/Sept.\\ 1994. Prof. Levin is an expert researcher in approximation<br />
theory who carries out ongoing research collaboration with Prof. Lubinsky in particular.<br />
Dr. J.-L. LI<br />
(Wuhan, China) Dates: Sept.\\ to Dec.\\, 1994 Dr. Li is a complex analyst who visited as an FRD<br />
Postdoctoral Fellow in order to work specifically with Prof. Lubinsky.<br />
Dr. R. LUNDELIUS<br />
(Stan<strong>for</strong>d, U.S.A.) Dates: Jan.\\ to Sept.\\, 1994 Dr. Lundelius continued his work as a University<br />
Visiting Research Fellow.<br />
Prof. H. PRODINGER<br />
(Vienna, Austria) Dates: Sept.\\ 1994 Dr. Prodinger specializes in asymptotic <strong>and</strong> digital<br />
expansions <strong>and</strong> worked closely with Prof. A. <strong>Knopfmacher</strong> in particular.<br />
Prof. B. VERDONK<br />
(Antwerp,Belgium) Dates: July/Aug.\\ 1994 Prof. Verdonk is an expert on Pad\\ e approximations<br />
who worked particularly with Profs. Lubinsky <strong>and</strong> Driver.<br />
Prof. R. WARLIMONT<br />
(Regensburg, Germany) Dates: March/April 1994 Prof. Warlimont is a well known expert on<br />
analytic number theory who has collaborated frequently with Profs. A. <strong>and</strong> J. <strong>Knopfmacher</strong>.<br />
Dr. J. WICK-PELLETIER<br />
(Toronto, Canada) Dates: Nov.\\ 1994 Dr. Wick-Pelletier has research interests in abstract<br />
analysis <strong>and</strong> category theory close to those of Drs. M. Korostenski (Maths. Dept.) <strong>and</strong> C.<br />
Labuschagne.<br />
1995. Visitors<br />
Prof. M. AGRANOVICH<br />
(Moscow, Russia) Dates: May/June 1995. Prof. Agranovich is an eminent specialist in differential<br />
operators, who worked particularly with Prof. Faierman <strong>and</strong> Dr. M\\"oller.<br />
Dr. P. GRABNER<br />
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(Graz, Austria) Dates: Oct.\\/Nov.\\ 1995. Dr. Grabner is a young but extremely active researcher<br />
on recurring sequences <strong>and</strong> digit expansions, who worked particularly with Prof. A. <strong>Knopfmacher</strong>.<br />
Prof. E. GRINSHPUN<br />
(Bar--Ilan, Israel) Dates: Aug.\\/Sept.\\ 1995. Prof. Grinshpun is a specialist in differential<br />
equations, who collaborated especially with Prof. Faierman.<br />
Prof. A.L. LEVIN<br />
(Tel Aviv, Israel) Dates: July/Aug.\\ 1995. Prof. Levin is a frequent past visitor, who is an expert on<br />
approximation theory <strong>and</strong> collaborates regularly with Prof. Lubinsky.<br />
Prof. E. MANSTAVICIUS<br />
(Vilnius, Lithuania) Dates: Sept.\\ to Nov.\\, 1995. Prof. Manstavicius is an authority on probability<br />
theory with interests in analytic number theory. His visit was of particular interest to Profs. A. <strong>and</strong><br />
J. <strong>Knopfmacher</strong>.<br />
Prof. S. PORUBSKY<br />
(Prague, Czech Rep.) Dates: May/June 1995. Prof. Porubsky is a specialist in number theory who<br />
has been collaborating actively with Prof. J. <strong>Knopfmacher</strong>.<br />
Prof. R. WARLIMONT<br />
(Regensburg, Germany) Dates: March/April 1995. Prof. Warlimont is a frequest past visitor who<br />
has collaborated regularly with Profs. A. <strong>and</strong> J. <strong>Knopfmacher</strong>.<br />
Prof. A. ZETTL<br />
(De Kalb, Illinois, U.S.A.) Dates: Nov.\\/Dec.\\ 1995. Prof. Zettl is an authority on eigenvalue<br />
problems <strong>for</strong> differential operators who has done joint research with Dr. M\\"oller.<br />
1996. Visitors<br />
By April 1996., the following 9 mathematicians had either arrived or had accepted definite invitations to<br />
visit the <strong>Centre</strong>:<br />
Dr. H.--K. HWANG<br />
(Taipei, Taiwan) Dates: June 1996. Dr. Hwang is an outst<strong>and</strong>ing young researcher on asymptotic<br />
enumeration problems, who has common interests with Profs. A. <strong>and</strong> J. <strong>Knopfmacher</strong>. He is<br />
expected to visit under the S.A.---Taiwan Scientists Exchange Programme.<br />
Prof. H. LANGER<br />
(Vienna, Austria) Dates: March 1996. Prof. Langer is an expert on differential equations <strong>and</strong> a<br />
<strong>for</strong>mer visitor, who collaborates particularly with Prof. Faierman <strong>and</strong> Dr. M\\"oller, <strong>and</strong> also with<br />
other visitors.<br />
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Prof. David LEVIN<br />
(Tel Aviv, Israel) Dates: Feb.\\ 1996. Prof. D. Levin is an expert on numerical analysis, who visited<br />
Prof. Lubinsky in particular.<br />
Prof. A.L. LEVIN<br />
(Tel Aviv, Israel) Dates: Aug.\\/Sept.\\ 1996. Prof. A.L. Levin is a regular visitor who frequently<br />
collaborates with Prof. Lubinsky.<br />
Prof. M. MARSALLI<br />
(Normal, Illinois, U.S.A.) Dates: May/June 1996. Prof. Marsalli is a specialist in functional analysis,<br />
who will be continuing an active research collaboration with Dr. West.<br />
Prof. M.E. MAYS<br />
(Morgantown, W. Virginia, U.S.A.) Dates: Jan.\\/Feb.\\ 1996. Prof. Mays is a <strong>for</strong>mer visitor to the<br />
<strong>Centre</strong> with expert interests in number theory <strong>and</strong> combinatorics, who has collaborated repeatedly<br />
with <strong>Centre</strong> members such as Profs. A. <strong>Knopfmacher</strong> <strong>and</strong> J.N. Ridley.<br />
Prof. R. MENNICKEN<br />
(Regensburg, Germany) Dates: March 1996. Prof. Mennicken is a leading authority on differential<br />
operators, who has visited the <strong>Centre</strong> previously, <strong>and</strong> collaborates frequently with Prof. Faierman<br />
<strong>and</strong> Dr. M\\"oller, <strong>and</strong> also with other visitors.<br />
Dr. N.M. TEMME<br />
(Amsterdam, Netherl<strong>and</strong>s) Dates: April/May 1996. Dr. Temme is a very prolific researcher on<br />
functions <strong>and</strong> approximation theory, who has been collaborating recently with Prof. Driver in<br />
particular.<br />
Prof. R. WARLIMONT<br />
(Regensburg, Germany) Dates: March 1996. Prof. Warlimont continued his regular visits to the<br />
<strong>Centre</strong> this year. As usual he interacted on problems of analytic number theory <strong>and</strong> combinatorics<br />
with Profs. A. <strong>and</strong> J. <strong>Knopfmacher</strong>.<br />
At least 2 more visitors to the <strong>Centre</strong> appeared to be virtually certain by April 1996.:<br />
Prof. W.--B. ZHANG<br />
(Urbana, Illinois, U.S.A.) Dates: 15 May to 15 July 1996. Prof. Zhang is an active researcher in<br />
analytic number theory, who is planning to collaborate particularly with Prof. J. <strong>Knopfmacher</strong>.<br />
Prof. D. HENSLEY<br />
(College Station, Texas, U.S.A.) Dates: 23 Nov.\\ 1996 - 11 Jan.\\ 1997. Prof. Hensley is a very<br />
talented number--theorist who will interact particularly with Profs. A. <strong>and</strong> J. <strong>Knopfmacher</strong>.<br />
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