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### Details of the abstract of Short Communication and Poster

1.Who can submit an abstract of Short Communication and Poster?
 All mathematicians in the world are invited to participate in ICM2002. Every mathematician who intends to take part in ICM2002 will has the opportunity to present their mathematical work in the form of a Short Communication or a Poster. However only those abstracts of Short Communication and Poster of Ordinary Membership of ICM (Who has finished registration )  can be printed in the form of abstract book, following reqirements must been satisfied : It has been submitted before May 1, 2002 . It is submitted by Ordinary Member of ICM2002 by May 1,2002,  It has been accepted by the Scientific Sub-Committee. If your contribution has been accepted by the Scientific Sub-Committee, you can present your work in certain section of ICM2002.

2.Only one Short Communication or Poster (and thus only one abstract) is allowed for each member.
 Only one Short Communication or Poster (and thus only one abstract) is allowed for each member. Each Short Communication lasts 15 minutes including discussion.

 The deadline for submission of abstracts is May 1, 2002.¡¡

Since the abstract book of  Plenary and Invited Lectures, Short Communication and Poster will be reproduced and distributed to all registered participants at the beginning of the Congress, it needs certain time to evaluate , edit and print the book .

Late abstracts will not be accepted. However, it is possible to present them in ad-hoc sessions that will be organized and announced during the conference.

4. Format description of the abstract of Short Communication and Poster.
 The abstract for a Short Communication or a Poster must include the appropriate section number and 2000 MS Classification number so that the Communications and Posters can be grouped in coherent way for presentation.  Abstracts may be submitted in English, French, German and Russian, with a preference in English. Abstracts should have the following form (compare also the enclosed example):  Section Number (see above)  2000 Mathematics Subject Classification Number  Name and affiliation of author(s)  Title  Abstract text (no more than 120 words) Abstracts should be prepared in TeX with magnification 1000,  textwidth 116truemm and textheight 190truemm.

5. Detail requirement of the Poster
 Each Poster session lasts 105 minutes; during that period the authors should stand by their posters and be available for questions and discussion. Authors presenting a Poster are advised to bring the material of the Poster with them when they come to the Congress since no facilities for preparing posters are available on site. The size of  the individual poster panels is as follows: width 180 cm, height 120 cm.

6. Which way is the best to submit an abstract of Short Communication or a Poster ?
 As the electronic form can be processed by program automatically, it is the best way for submitting the abstract of the Short Communication and Poster. It can save a lot of  time to mail abtract by postal office and retype it. With this reason, the Electronic Abstract Submission at the WWW website is strongly encouraged. However if you have trouble with using electronic abtract submission at the WWW website, the other ways, such as email, fax, postal mail  also can be used to submit your abstract .  ¡¡

7.The Scientific Sub_committee will notify authors of acceptance/rejection of their abstract.
 The Local Scientific Committee will notify authors of acceptance/rejection of their contribution with certain delay. Abstracts of accepted Posters and Short Communications which are properly prepared and received by the deadline will be reproduced and  distributed to all Ordinary Members when they pick up their registration package.  Abstracts which do not conform to the stipulated rules will be returned to the author for resubmission.

8. What abstract can be collected into the abtract book?
 Abstracts of accepted Posters and Short Communications which are properly prepared and received by the deadline will be reproduced and distributed to all Ordinary Members when they pick up their registration package.

9.How the Short Communication or Poster will be organized in the ICM2002?
 All presentations will be devided into 19 sections 1. Logic 2. Algebra 3. Number Theory 4. Differential Geometry 5. Topology 6. Algebraic and Complex Geometry 7. Lie Groups and Representation Theory  8. Real and Complex Analysis 9. Operator Algebras and Functional Analysis 10. Probability and Statistics 11. Partial Differential Equations 12. Ordinary Differential Equations and Dynamical Systems 13. Mathematical Physics  14. Combinatorics 15. Mathematical Aspects of Computer Science 16. Numerical Analysis and Scientific Computing 17. Applications of Mathematics in the Sciences 18. Mathematics Education and Popularization of Mathematics 19. History of Mathematics Short Communications are grouped into time slots of 45 minutes for three presentations. The rooms for Short Communications are equipped with a blackboard and an overhead projector. Each Poster session lasts 105 minutes; during that period the authors should stand by their posters and be available for questions and discussion. (please refer ICM2002  Section Descriptions, Circular Letter CL05 for more details)

10. Example of the Abstract of Short Communications and Posters
 \textbf{Section:} 1 \textbf{2000 MS Classification:} 3,4,68 Welch, Philip, Kobe University, Japan \\ {\bf The Length of Inifinite Time Turing Machine Computations} \\ We show that the halting times of infinite time Turing machines (considered as ordinals) are thenselves all halting outputs of such machines. This gives a clarification of the nature of supertasks'' or infinite time computations. The proof further yieds that the class of sets coded by outputs of halting computations coincides with a level of G\"odel's constrcutible hierarchy: namely that of $L_\lambda$ where $\lambda$ is the supremum of  halting times. A number of other open questions are thereby answered.

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