Sách tổng hợp 50 năm cuộc thi toán quốc tế olympiads IMO
[...]... recommence its affected operations in order for it to perform its obligations Chapter 3 Carl Friedrich Gauss, Curvature, and the Cover Art of the 50th IMO Detail from the IMO 2009 poster showing an artist’s rendering of Gauss’ map The design of the poster of the 50th IMO is an artist’s version of a map produced by the German mathematician, physicist, and astronomer Carl Friedrich Gauss in 1821 Gauss’ interests... Nikita Selinger Michael Stoll Marlon Tilgner Vladlen Timorin Christopher de Vries Raymond O Wells, Jr Stefan Wieding Rob Wieleman Chapter 2 Regulations 1 General 1.1 The 50th International Mathematical Olympiad (the "IMO 2009") will be held in Germany from July 10 to July 22, 2009 1.2 These regulations (the "regulations") govern the running of the IMO 2009 1.3 The Association Bildung und Begabung e.V... will contain, among other things, details of accommodation arrangements (including food) for Participants and Observers and the venues for various official events associated with the IMO 2009 2.5 Each invited country wishing to participate in the IMO 2009 must confirm participation online using username and password provided by Bildung und Begabung no later than February 27, 2009 This will also confirm that... (Director IMO- Office Bonn) Dierk Schleicher (Bremen; Anniversary Celebration) Harald Wagner (Executive Director) 5 6 1 Committees 1.3 Organizers IMO2 009 – Office Bonn Menna Jones Hanns-Heinrich Langmann Eva Vahjen Harald Wagner Tanja Weck IMO2 009 – Office Bremen Anke Allner Roselies Cordes Frauke Dammann Jane Ferguson Daniel Hockenberry Cristian Nucu Mesaros Georg Schröter Silke Tilgner Oliver Walenziak IMO2 009... Noack Matthias Ohst 9 Martin Olbermann Florian Pfender Gerlind Plonka-Hoch Daniel Potts Wolfgang Radenbach Christian Reiher Frank Ristau Karsten Roeseler Jürgen Roßmann Michael Rüsing Jan-Christoph Schlage-Puchta Peter Scholze Georg Schönherr Reinhard Schuster Stefan Schwarz Eckard Specht Colin Stahlke Gabriele Steidl Jakob Stix Kristin Stroth Matthias-Torsten Tok Eberhard Triesch Peter Wagner Matthias... Mallahi-Karai Rüdiger Olbrich Peter Rashkov Nikita Selinger Anton Suharev Michael Thon 1 50th IMO 2009 11 Team Guides Shaik Ahmed (PAK) Meru Alagalingam (LKA) Marie van Amelsvoort (NLD) Apostol Apostolov (ARM) Manuel Bärenz (HND, SLV) David Bauer (BIH) Nils Becker (AUT) Todor Bilarev (BGR) Lukas Brantner (CAN) Simon Buchholz (ECU) Olexiy Chudnovskyy (UKR) Hauke Conradi (FIN) Lucie Costard (ISL) Martin... Jean-Christophe Yoccoz 217 Small Divisors: Number Theory in Dynamical Systems 219 Part II History: 50 Years International Mathematical Olympiads 8 Brief Survey 229 9 All IMOs 233 10 All Countries 235 Contents xi 11... 285 14 The Golden Microphone 291 Rafael Sánchez Lamoneda A IMO Country Codes 295 • Contributors The following IMO enthusiasts contributed to various texts and tables in this volume: Hans-Dietrich Gronau Institute of Mathematics, University of Rostock, D-18051 Rostock, Germany, e-mail: gronau@uni-rostock.de... Games 157 7.2 Timothy Gowers 169 How do IMO Problems Compare with Research Problems? 171 7.3 László Lovász 185 Graph Theory Over 45 Years 187 7.4 Stanislav Smirnov 197 How do Research Problems Compare with IMO Problems? ... Mikulich Sönke Mittwollen Rüdiger Olbrich 1 Committees Marcel Oliver Peter Oswald Tobias Preußer Peter Rashkov Frederik van Schagen Friedemann Schleicher Nikita Selinger Anton Suharev Henning Thielemann Michael Thon Vladlen Timorin Wiebke Trumann Sergiy Vasylkevich Christopher de Vries 1.8 Guides Chief Guides Anke Allner Wilfried Kurth Stefanie Schiemann Senior Guides Jan-Hendrik Bruns Jan Cannizzo Zymantas . alt="" 50th IMO – 50 Years of International Mathematical Olympiads − Hans-Dietrich Gronau • Hanns-Heinrich Langmann Dierk Schleicher Editors 50thIMO–50Years. Schleicher Welcome Message Dear IMO participants, This year’s IMO has a special significance: we celebrate the 50th anniversary of the IMO. In the beginnings it