Last Updated: 12 March 2007

International Conference

Geometry of Integrable Systems

09-13/April/2007, Hanoi – Vietnam

This is an international conference organized by the French “Agence Nationale de Recherche” research project “Intégrabilté réelle et complexe en mécanique hamiltonienne” in cooperation with Hanoi University of Education.

Poster Visa Hotel Scientific Program Titles and Abstracts
List of Participants Registration Financial Support School Social Program

Invited speakers include:

  • Michèle Audin (Univ. of Strasbourg, France)
  • Alexei Bolsinov (Loughborough Univ., UK)
  • Boris Dubrovin (SISSA, Italy)
  • Holger Dullin (Loughborough Univ., UK)
  • Gregorio Falqui (Univ. Milano, Italy)
  • Jean-Pierre Françoise (Univ. Paris 6, France)
  • Heinz Hanssmann (Utrecht, Netherlands)
  • Jarmo Hietarinta (Univ. of Turku, Finland)
  • Thomas Kappeler (Univ. of Zurich, Switzerland)
  • Yuji Kodama (Ohio State Univ., USA)
  • Juan Morales (UP Barcelona, Spain)
  • Duong Hong Phong (Columbia Univ., USA)
  • Jean-Pierre Ramis (Univ. of Toulouse, France)
  • Jonathan Robbins (Univ. Bristol, UK)
  • Tudor Ratiu (EPFL, Switzerland)
  • Jacek Tafel (Warsaw, Poland)
  • San Vu-Ngoc (Univ. of Grenoble, France)
  • Haruo Yoshida* (National Astronomical Obs., Japan)

* = to be confirmed

Main topics include:

  • Various notions of integrability
  • Local and global properties of integrable (non)Hamiltonian systems in finite and infinite dimension
  • Obstructions to integrability
  • Quantum integrable systems
  • Perturbations of integrable systems

International organizers:

  • Jean-Pierre Ramis (Toulouse)
  • Tudor Ratiu (Lausanne)
  • Alexei Tsygvintsev (Lyon)
  • Nguyen Tien Zung (Toulouse).

Local organizers:

  • Do Ngoc Diep (Hanoi Institute of Mathematics)
  • Nguyen Quang Dieu (Hanoi University of Education)
  • Do Duc Thai (Hanoi University of Education)

VISA INFORMATIONLatest Info: The visa reference number will be sent to you (incase you requested it) on Wednesday 14 March. Per our local organizers, the reference numbers are ready now, but the person in charge of them is in the hopital so they have to wait until Tuesday-Wednesday to pick them up. We’re sorry for any inconvenience this delay may cause.Most foreigners need a visa to enter Vietnam, except for citizens of the following countries (please check with the Vietnamse Embassy in your country to make sure):
* Japan, South Korea, Sweden, Denmark, Norway, Finland: for visits of up to 15 days.
* ASEAN countries: for visits of up to 21 days or 1 month, depending on the country.Since you will attend a conference in Vietnam, if you need a visa, the Vietnamese side will issue a kind of “official” visa for you. (Of course, you may also “do it yourself” and ask for a tourist visa at a Vietnamese Consulate if you wish).Our local organizer Do Duc Thai (Prof. at Hanoi University of Education) will take care of this visa problem for the conference. He’ll send a request to the Interior Ministry of Vietnam, with the list of foreign participants of the conference. The Interior Ministry will then issue an approval letter for each participant, send that letter by fax to the corresponding Consulate (where you want to pick up your visa), asking the Consulate to issue a visa for
you. Each letter has a reference number. We will inform you of the reference number. Then you can go to the Consulate or send your passport there, together with the reference number, and they’ll issue the visa for you the same day.The Interior Ministry of Vietnam takes a month to process the request, and since there will be long vacations in February (Chinese/Vietnamese new year) we will have to submit it by the end of this month to make sure that we have enough time !

HOTELBy default, we will reserve rooms at the following hotel for most
participants: Army Hotel, 33 C Pham Ngu Lao Street, Hanoi, Vietnam hotel is situated in a quiet street in the center of Hanoi (walking distance from many points of interest). It has a swimming pool (free access). The negotiated price is about USD40/day/single room including breakfast.We may also lodge 2-3 participants at the guesthouse of Hanoi Institute of Mathematics. (They have a small guesthouse with only 2-3 rooms, inside the institute).If you prefer to reserve a hotel by yourself, please send an email to Do Duc Thai to let him know that, so that or local organizers will not reserve a hotel for you !If you need a double room or a suite (for a family), or want to share a double room with another
participant, please also let us know!Since the University is not in the center of Hanoi, we will request a special university bus to take the participants from the hotel to the university and back every conference day.If you prefer to look for a hotel by yourself, here are some possible places to start:


(Prices vary from under USD10 to above USD100 per night)

PLANE TICKETSDue to an significant increase of the number of tourists in Vietnam, it may be
very difficult to reserve plane tickets for the dates that you wish at reasonable
prices. So please think about reserving your tickets as soon as possible !Hint: Don’t trust online travel agencies for tickets to Vietnam, because
those online portals don’t show “negotiated prices” and show only more expensive
prices in general. Instead, call a “brick and mortar” agency and ask for best prices.In France, you may try these 2 agencies which are specialized in trips to Asia:* Hit Voyages, 21 Rue des Bernardins – 75005 PARIS
Tel. : 01 43 54 17 17 – Fax : 01 43 25 22 16* Ariane Tours, 5 square Dunois 75013 PARIS
Tel: 01 45 86 88 66 – Fax: 01 45 82 21 54Our latest information is that the prices have increased from last year, and it now costs about 1000 Euro for a round trip Paris-Hanoi ou Saigon (taxes included) with Vietnam Airlines, and a bit higher with Air France. There are other options, e.g. with Singapour Airlines, Thai Airlines, Lufthansa, Japan Airlines, American Airlines (for the US), etc.


We plan to have a number of plenary talks of 1h each, and a number of shorter (30m-40m) presentations. Below is a preliminary schedule:

8h30-9h30 9h45-10h45 11h-12h 14h-15h 15h15-16h15 16h30-17h30
Mon 09/Apr Opening Talk Talk Talk Talk ShortTalks
Tue 10/Apr Talk Talk Talk Talk Talk ShortTalks
Wed 11/Apr Talk Talk Talk (excursion) (excursion) (excursion)
Thu 12/Apr Talk Talk Talk Talk ShortTalks ShortTalks?
Fri 13/Apr Talk Talk Talk ShortTalks Talk Closing

SCHOOL In the week 02-06/April/2007 preceding the conference, there will be a school intended mainly for graduate students and young researchers (to prepare them for the conference). The school will consist of 4 minicourses at basic level. Lecturers for the school are: Alain Albouy, Tudor Ratiu, Tadashi Tokieda, Alexei Tsygvintsev.

REGISTRATIONPlease contact the organizers URGENTLY if you wish to attend the conference and your name is not in the list of participants yet.A small registration fee (USD80 or an equivalent amount in other currency, in cash, due on arrival) will be charged to the participants. This will cover the banquet, some lunches, and some other social activities, but not the hotel. This registration fee may be waived in some cases.


  • A conference banquet.
  • Excursion of Hanoi: Wednesday 11/Apr afternoon 14h-19h (visit of the Temple of Literature, “But Thap” Pagoda, etc.)
  • 2-day excursion to Halong Bay: Saturday 14/Apr – Sunday 15/Apr (a special fee of USD100 will be charged to each participant of this excursion). For those who have already been to Halong Bay, we may propose another excursion, e.g. to the old imperial city Hoi An.

FINANCIAL SUPPORTMain Sponsors: Agence Nationale de la Recherche (France), and Hanoi University of Education.Other confirmed sponsors include:Toulouse Institute of Mathematics, Hanoi Institute of Mathematics, ForMathVietNam, Vietnamese National Research Program on Mathematics.We can cover local expenses for the main speakers and a few other participants, but not the travel tickets in general.
(Unfortunately, since our budget is very limited, we are able to give financial support to much fewer people than we would wish).

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