Welcome !
The Workshop on Operator Theory and Krein Spaces aims at bringing together mathematicians working on
spectral theory, Krein spaces, and related fields.
Subjects will range from geometry of indefinite inner product spaces and operator theory
to classical analysis of ordinary and partial differential equations.
Please use the links on this website to obtain more information.
Registration (deadline September 22, 2019) and submission of abstracts (deadline November 30, 2019) should be done through this website.
The registration fee is € 150. This fee covers conference material, the conference dinner for participants, and coffee breaks.
Accompanying persons should pay € 50 to attend the conference dinner.
If you have special requests which are not answered by the information on this site, please use the conference
email address
otind(at)asc.tuwien.ac.at.
This meeting is dedicated to the memory of our colleague and friend Hagen Neidhardt (20.11.1950 - 23.3.2019).
Hagen is well known in the mathematical community for his various contributions to spectral and scattering theory.
During the conference some of his main collaborators will report on their common projects.
Some photos of Hagen which were shown by the speakers can be found
here.
This event is co-organised with
COST Action CA18232
"Mathematical models for interacting dynamics on networks", and contains a special session devoted to the topics of the action.
With best regards, the Organizing Committee,
Jussi Behrndt (TU Graz.
www)
Aleksey Kostenko (University of Vienna.
www)
Raphael Pruckner (Vienna University of Technology)
Harald Woracek (Vienna University of Technology.
www)
Travel
By plane
Vienna can comfortably be reached by plane from many destinations. The Vienna International Airport
is served by many regular airlines and also by several low-cost carriers. See the website of the
Vienna International Airport for detailed information.
Some low-cost carriers offer flights to Bratislava airport. See
Bratislava Airport for detailed information.
There are regular bus services running between Vienna downtown and Bratislava airport (several companies; 1 to 1 1/2 hours journey).
By long-distance train
Especially if you come from not so far, it is worth to check train connections. There are frequent and fast
connections from Zurich, Frankfurt, Munich, Prague, Budapest and other destinations.
For the train schedules see the
journey planner
of the Austrian Federal Railways (
OEBB).
How to get to town from the Vienna airport
The airport is conveniently connected to the city in several ways.
- By train.
There are regular train services to Vienna Main Railway Station (Wien Hauptbahnhof) with
long-distance trains (RJX, RJ; 15 minutes journey), and to the station Wien Mitte with
regional or suburban trains (S, R, 20-25 minutes journey).
-- Costs: 4.20 Euro (one way).
Tickets can be bought online from the website of the
Austrian Federal Railways (OEBB), or upon arrival at the airport
from a counter in the arrival hall or machines in the hall before the platforms. Tickets for long distance trains can also be
bought from the conductor in the train (slightly more expensive), for regional and suburban trains it is obligatory to get a
ticket before entering the train.
Another possibility is the City Airport Train (CAT) which runs between the airport and the station
Wien Mitte. Among locals this service is known as the heavily advertised overpriced tourist trap.
If one travels with a lot of heavy luggage, it may still be worth considering when leaving Vienna
since it offers the possibility to check in the luggage for the flight already at Wien Mitte.
For schedule and prices see here.
- By taxi.
Several companies offer taxi service from/to the airport.
Order a taxi in advance from
Airport Drivers, or
Vienna Airport Cab, or
taxi31300.
Especially if you travel in a small group or have more luggage this is a comfortable option.
-- Costs: Between 30 and 50 Euro (one way) depending on the number of passengers.
Grab a taxi in front of the airport building (not recommended).
This is usually expensive, and it may happen that there are no taxis available.
- By bus.
Vienna Airport Bus (Flughafenbus) runs several bus lines.
Buses depart from platforms in front of the airport building.
For a detailed schedule and their lines see here.
-- Costs: 8 Euro (one way), 13 Euro (return trip).
Tickets can be purchased online or from the driver.
Accomodation
There is a wide range of hotels of all categories and price ranges. You can use any common
booking engine like
booking.com or
budgetplaces.com to look for a place to stay.
A few decent, resonably priced, and well located places are
- Hotel Admiral, Karl Schweighofer-Gasse 7, 1070 Wien
(website).
- Carlton Opera Hotel, Schikanedergasse 4, 1040 Wien
(website).
- Hotel Terminus, Fillgradergasse 4, 1060 Wien
(website).
- Motel One, Elisabethstrasse 5, 1010 Wien
(website).
When you plan your trip, please take into account that the time before X-mas is a popular and quite busy
tourist period. Hence hotels tend to be fully booked quite some time in advance.
Public Transport in Vienna
The public transport system in Vienna is well-developed. To give you an overview, it includes suburban trains (
S-Bahn,
numbered "S1", "S2", etc.), underground lines (numbered "U1", "U2", etc.), trams
(numbered "1", "2", etc., a few exceptional numberings like "D"), and buses (numbered "1A", "13A", etc.).
A map† of public transport lines.
Tickets can be bought from machines at every train/underground station or ordered online in advance. There are tickets for
various possible time ranges, for example:
- a single journey (the notion one journey includes changes of lines),
- 24h, 48h, 72h,
- 8 days (not necessarily consequtive),
- weekly (monday-sunday).
Tickets should be stamped at the beginning of their validity period. Depending on the type of ticket, this period
can be one single journey, one day, one week, etc. Machines (little boxes) to stamp tickets are located
- for S-Bahn/underground generally in the hall before getting to the platforms, latest at the platform,
- inside trams and buses.
Single tickets can also be bought from machines inside trams and buses (not in S-Bahn or underground trains).
However, unless necessary, this is not recommended (sometimes these machines don't work, sometimes one doen't have coins, etc.).
Detailed information can be found at the website of the
Wiener Linien, see
here (english version available). This site includes a practical interactive
journey planner (click the
Journey button on the site).
†Source: https://www.wienerlinien.at.
About food
Restaurants
There are nearly infinitely many places to have lunch or dinner, and many are close to the university.
Here are a few restaurants which are not ''just the usual stuff''.
-
Umar (incredible fish and seafood).
Naschmarkt (stand 76-79)
http://www.umarfisch.at/index2.shtml
Sunday closed
Reservation necessary: call +43 1 5870456
-
Ubl (charming Viennese restaurant; a typical ''Beisl'')
Pressgasse 26
-
Artner auf der Wieden (somewhat more sophisticated)
Floragasse 6
http://www.artner.co.at/wieden/
-
Beograd (Serbian)
Schikanedergasse 7
https://restaurant-beograd.at/
-
Figlmüller Wollzeile (despite being advertised already at the airport, the Schnitzel is indeed great and the
atmosphere is surprisingly typical -- at least in their place in Wollzeile)
Wollzeile 5
https://www.figlmueller.at/en/
Reservation necessary: online or call +43 1 5126177
-
Ostwind (quite original chinese restaurant)
Lindengasse 24
www.ostwindwien.at
Reservation necessary: call +43 1 5234182
-
I Ragazzi (Italian)
Burggasse 6-8
http://www.iragazzi.at
Reservation recommended: call +43 1 5226325
-
Kojiro 2 (Japanese).
Kühnplatz 4
Sunday closed
Reservations: call +43 1 5855428
-
Amacord (Restaurant)
Rechte Wienzeile 15
http://www.amacord-cafe.at
-
Amerlingbeisl (nice place in a nice area for going out).
Stiftgasse 8
http://www.amerlingbeisl.at
Reservations: call +43 1 5261660
Coffee Houses
Coffee houses have a great tradition in Vienna.
They are also good to get lunch or dinner; cooked dishes are usually served for reasonable prices.
Again we list only a few of the many places.
-
Cafe Prückel (go and eat Apfelstrudel)
Stubenring 24
http://www.prueckel.at/
-
Cafe Jelinek (take the time to forget about time)
Otto-Bauer-Gasse 5
http://cafejelinek.steman.at/
-
Cafe Sperl (beautiful interior)
Gumpendorferstrasse 11
http://www.cafesperl.at/
-
Cafe Bräunerhof
Stallburggasse 2
http://www.braeunerhof.at/
In the TU Vienna
Though it may not quite match the title of this page, one should mention that in the university building there are
-
University canteen
Freihaus building, yellow area, 1st floor
Saturday/Sunday closed
-
Cafe Schrödinger
Freihaus building, green area, ground floor (entrance from the street)
Saturday/Sunday closed
Christmas markets
Naturally, there are many X-mas markets. We recommend two.
-
The market in front of the town hall (Rathausplatz)
Big and quite touristic, but the town hall and the park is very beautiful.
-
The Spittelberg market (Spittelberggasse and neighbouring streets)
Nice area, nice market, not too touristic. Also good for getting some small presents.
†Copyright: Freytag-Berndt u. Artaria KG, 1230 Vienna, Austria, Europe.
The Vienna University of Technology
-
Map of all TU Vienna buildings.
The conference takes place in the Freihaus building, shown on the map as the part of D
including the numbers 4,5,12. The main entrance is marked with "i" (because inside the
building you find doormen who you may ask for information).
The address is Wiedner Hauptstrasse 8-10, Vienna 1040.
-
The Freihaus building itself is structured into three vertical areas:
red, yellow, and green.
Upon entering you find yourself in the red area.
In each area there are elevators, a main staircase, and small staircases.
The main staircases lead from the ground floor up to the 2nd floor (ground floor = floor 0).
Small staircases (and, naturally, elevators) lead further up.
The different areas are connected; you can pass from one to another on every floor.
-
All rooms used for the conference are in the green area.
Talks take place in three lecture rooms.
- Morning session: FH HS 5 (stands for Freihaus Hörsaal 5) on 2nd floor. This is a large lecture hall.
- Afternoon sessions: ZS 3 (stands for Zeichensaal 3) on 7th floor and ZS 1 on 8th floor.
These are medium size lecture halls.
These rooms (FH HS 5, ZS 3, ZS 1) are equipped with blackboards and projector+computer.
They are open only for the lectures and will be locked during breaks.
Further we use the following rooms.
- Coffee Breaks: Sem 03 A (stands for Seminarraum 03 A) on 3rd floor.
- Rooms for discussion/work: Sem 03 C on 3rd floor and Former Library (Institutsbibliothek) on 6th floor.
These are smaller rooms.
These rooms (Sem 03 A, Sem 03 C, Former Library) will always be open to ensure constant supply with
coffee, chalk and blackboard.
Here are maps of different floors indicating relevant places.
-
Registration takes place Thursday 9'30-10'00 and 11'00-11'45 in front of FH HS 5.
Participants who arrive later, are asked to personally contact one of the organisers who will
then take care of the registration.
Conference Dinner
The Conference Dinner takes place
Friday 20.12.2019, 19'00 in the
Zwölf-Apostelkeller.
This restaurant is located in the very heart of the city (Sonnenfelsgasse 3; see
this map† of the inner city,
where we also marked coffee houses).
They offer a buffet with traditional Austrian dishes and some vegetarian dishes.
We shall gather after the last talk in front of the main lecture hall (FH HS 5, 2nd floor, green area),
and depart at 18'30 to walk there together
(about 20 minutes walk through the inner city). Of course you can also get there on your own.
The buffet, non-alcoholic drinks, and beer/wine up to a reasonable amount is covered.
Program
Click on the title of a talk to obtain the abstract.
Program and abstracts are available as pdf in the download area.
Thursday 19.12.2019
Friday 20.12.2019
Sem 03 C (3rd floor) |
15'30 |
Core Group Metting COST Action CA18232
|
Zwölf-Apostelkeller (Sonnenfelsgasse 3) |
19'00 |
Conference Dinner
|
Saturday 20.12.2019
Sunday 22.12.2019
Participants
|
-
Vadym Adamyan
(Odessa I.I. Mechnikov National University, Ukraine)
-
Nausica Aldeghi
(Stockholm University, Sweden)
-
Andras Batkai
(PH Vorarlberg, Austria)
-
Jussi Behrndt
(Graz University of Technology, Austria)
-
Sergey Belyi
(Troy University, USA)
-
Anton Boitsev
(ITMO University, Russia)
-
Petru Cojuhari
(AGH University of Science and Technology, Poland)
-
Petra Csomos
(Eötvös Lorand University, Hungary)
-
Vahid Darvish
(Nanjing University of Information Science and Technology, China)
-
Volodymyr Derkach
(Vasyl Stus Donetsk University, Ukraine)
-
Jaroslav Dittrich
(Nuclear Physics Institute CAS, Czech Republic)
-
Jonathan Eckhardt
(Loughborough University, UK)
-
Pavel Exner
(Czech Academy of Sciences, Czech Republic)
-
Asaf Franco
(IIMAS-UNAM, Mexico)
-
Luka Grubisic
(University of Zagreb, Croatia)
-
Seppo Hassi
(University of Vaasa, Finland)
-
Rostyslav Hryniv
(Ukrainian Catholic University, Ukraine / University of Rzeszow, Poland)
-
Markus Holzmann
(Graz University of Technology, Austria)
-
Takashi Ichinose
(Kanazawa University, Japan)
-
Michael Kaltenbäck
(Vienna University of Technology, Austria)
-
James Kennedy
(University of Lisbon, Portugal)
-
Andrii Khrabustovskyi
(Graz University of Technology, Austria / University of Hradec Kralove, Czech Republic)
-
Werner Kirsch
(Fernuinversität Hagen, Germany)
-
Aleksey Kostenko
(Vienna University of Technology, Austria / University of Ljubljana, Slovenia)
-
Marjeta Kramar-Fijavz
(University of Ljubljana, Slovenia)
-
Pavel Kurasov
(Stockholm University, Sweden)
-
Heinz Langer
(Vienna University of Technology, Austria)
-
Matthias Langer
(University of Strathclyde, UK)
-
Lassi Lilleberg
(University of Vaasa, Finland)
-
Vladimir Lotoreichik
(Czech Academy of Sciences, Czech Republic)
-
Annemarie Luger
(Stockholm University, Sweden)
-
Alexander Makin
(Russian Technological University, Russia)
-
Mark Malamud
(Russian Friendship University, Russia)
-
Vadim Mogilevskii
(Poltava V.G. Korolenko National Pedagogical University, Ukraine)
-
Samuel Mohr
(TU Ilmenau, Germany)
-
Alexander Motovilov
(Bogoliubov Laboratory of Theoretical Physics at the Joint Institute for Nuclear Research, Russia)
-
Ivica Nakic
(University of Zagreb, Croatia)
-
Noema Nicolussi
(University of Vienna, Austria)
-
Andrea Posilicano
(Universita dell'Insubria, Italy)
-
Olaf Post
(Universität Trier, Germany)
-
Aleksandra Puchalska
(University of Warsaw, Poland)
-
Raphael Pruckner
(Vienna University of Technology, Austria)
-
Nadezhda Rautian
(Lomonosov Moscow State University, Russia)
-
Jakob Reiffenstein
(Vienna University of Technology, Austria)
-
Roman Romanov
(St.Petersburg State University, Russia)
-
Alexander Sakhnovich
(University of Vienna, Austria)
-
Felix Schwenninger
(University of Twente, The Netherlands)
-
Igor Sheipak
(Lomonosov Moscow State University, Russia)
-
Harun Siljak
(Trinity College Dublin, Ireland)
-
Sergey Simonov
(Steklov Mathematical Institute, Russia)
-
Henk de Snoo
(University of Groningen, The Netherlands)
-
Artur Stephan
(WIAS-Berlin, Germany)
-
Georg Stenzel
(Graz University of Technology, Austria)
-
Dmytro Strelnikov
(TU Ilmenau, Germany)
-
Christiane Tretter
(University of Bern, Switzerland)
-
Carsten Trunk
(TU Ilmenau, Germany)
-
Victor Vlasov
(Lomonosov Moscow State University, Russia)
-
Rudi Wietsma
(University of Vaasa, Finland)
-
Harald Woracek
(Vienna University of Technology, Austria)
-
Nikos Yannakakis
(National Technical University of Athens, Greece)
-
Valentin Zagrebnov
(Institut de Mathematiques de Marseille, France)
|
Slides
Here you find most presentations given at the conference.
Registration
The deadline for registration (September 22, 2019) has passed.
Registration is closed.
Abstract Submission
The deadline for submitting the abstract (November 30, 2019) has passed.
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