1. Helly Eduard Helly. Born 1 June 1884 in Vienna, Austria Died 28 Nov 1943 in Chicago,Illinois, USA. Eduard Helly came from a Jewish family in Vienna. http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Helly.html

Eduard Helly Born: 1 June 1884 in Vienna, Austria Died: 28 Nov 1943 in Chicago, Illinois, USA Click the picture above to see a larger version Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Eduard Helly came from a Jewish family in Vienna. He studied at the University of Vienna and was awarded his doctorate in 1907 after writing a thesis under the direction of Wirtinger and Mertens . His thesis was on Fredholm equations. Wirtinger Hilbert Klein Minkowski and Runge in 1907-8. Returning to Vienna in 1908 he had no university post, but supported himself in a number of different ways. He taught in a Gymnasium, gave private tuition, and wrote solution manuals for a series of standard textbooks. During this period, he undertook research on functional analysis and proved the Hahn Banach theorem in 1912, fifteen years before Hahn published essentially the same proof and 20 years before Banach gave his new setting. We discuss this more fully later in this article. On the outbreak of World War I, Helly enlisted in the army. While serving as a lieutenant in September 1915 he was shot. The bullet went through his lung and did damage to his health from which he never recovered throughout the rest of his life. After being shot he was captured by the Russians. After this he spent years in hospitals and prisoner of war camps in Siberia. One might have expected that the end of World War 1 in 1918 would have led to Helly's release but by this time the Russian armies were fighting each other and escape was impossible. Even after leaving Russia it was a long route back to Vienna for Helly who travelled through Japan, the Far East, Egypt and the Middle East before reaching home in 1920.

2. Virtual Encyclopedia Of Mathematics percy john hecht daniel friedrich hecke erich heilbronn hans arnold heine heinricheduard heisenberg werner karl hellinger ernst helly eduard helmholtz hermann http://www.lacim.uqam.ca/~plouffe/Simon/supermath.html

Super-Index of Biographies of Mathematicians abel niels henrik abraham bar hiyya ha-nasi abraham max abu kamil shuja ibn aslam ibn muhammad ... zygmund antoni This index was automatically generated using a new tagging program written by Simon Plouffe at LaCIM

3. Helly, Eduard Translate this page Helenenberg - helly, eduard (25/25). Hellweger, Franz, Helenenberg - helly,eduard. helly, eduard. helly, eduard, * 1. 6. 1884 Wien, † 28. 11. http://www.aeiou.at/aeiou.encyclop.h/h459793.htm

A B C D ... Helenenberg - Helly, Eduard Helly, Eduard Helly, Eduard, * 1. 6. 1884 Wien, † 28. 11. 1943 Chikago (USA), Mathematiker. Beamter der Bodencreditanstalt, lehrte ab 1921 an der Literatur: Neue Deutsche Biographie Hinweise zum Lexikon Suche nach hierher verweisenden Seiten

4. Untitled Translate this page Otto Karl 08.09.1895 A Hellreich, Sofie 22.03.1913 A Hellwig, Edmund 06.01.1881 AHellwig, Otto 24.05.1885 A helly, Anna 06.11.1887 A helly, eduard 01.06.1884 http://www.avotaynu.com/HolocaustList/h2.htm

5. Helly Biography of eduard helly (18841943) eduard helly. Born 1 June 1884 in Vienna, Austria http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Helly.html

Eduard Helly Born: 1 June 1884 in Vienna, Austria Died: 28 Nov 1943 in Chicago, Illinois, USA Click the picture above to see a larger version Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Eduard Helly came from a Jewish family in Vienna. He studied at the University of Vienna and was awarded his doctorate in 1907 after writing a thesis under the direction of Wirtinger and Mertens . His thesis was on Fredholm equations. Wirtinger Hilbert Klein Minkowski and Runge in 1907-8. Returning to Vienna in 1908 he had no university post, but supported himself in a number of different ways. He taught in a Gymnasium, gave private tuition, and wrote solution manuals for a series of standard textbooks. During this period, he undertook research on functional analysis and proved the Hahn Banach theorem in 1912, fifteen years before Hahn published essentially the same proof and 20 years before Banach gave his new setting. We discuss this more fully later in this article. On the outbreak of World War I, Helly enlisted in the army. While serving as a lieutenant in September 1915 he was shot. The bullet went through his lung and did damage to his health from which he never recovered throughout the rest of his life. After being shot he was captured by the Russians. After this he spent years in hospitals and prisoner of war camps in Siberia. One might have expected that the end of World War 1 in 1918 would have led to Helly's release but by this time the Russian armies were fighting each other and escape was impossible. Even after leaving Russia it was a long route back to Vienna for Helly who travelled through Japan, the Far East, Egypt and the Middle East before reaching home in 1920.

6. References For Helly References for eduard helly. Books PL Butzer, RJ Nessel and EL Stark, eduardhelly (18841943) In memoriam, Resultate der Mathematik 7 (1984). http://www-gap.dcs.st-and.ac.uk/~history/References/Helly.html

References for Eduard Helly Biography in Dictionary of Scientific Biography (New York 1970-1990). Books: P L Butzer, R J Nessel and E L Stark, Eduard Helly (1884-1943) : In memoriam, Resultate der Mathematik Articles: Jahresberichte der Deutschen Mathematiker vereinigung H Hochstadt, Eduard Helly, Father of the Hahn-Banach Theorem, The Mathematical Intelligencer I Netuka and J Vesely, Eduard Helly, convexity and functional analysis (Czech), Pokroky Mat. Fyz. Astronom. V M Tikhomirov, Eduard Helly (Russian), Istor.-Mat. Issled. V M Tikhomorov, Eduard Helly, Istoriko- matematicheskie issledovaniya Main index Birthplace Maps Biographies Index History Topics ... Anniversaries for the year JOC/EFR May 2000 School of Mathematics and Statistics University of St Andrews, Scotland The URL of this page is: http://www-history.mcs.st-andrews.ac.uk/history/References/Helly.html

7. Helenenberg - Helly, Eduard Wählen Sie das gewünschte Stichwort in der nachfolgenden Liste. Helenenberg helly, eduard http://www.allaboutaustria.at:81/aeiou.encyclop.h.h20

A B C D ... Helm, Theodor Otto - Henz, Rudolf Pseudonym: R. Miles Helenenberg - Helly, Eduard Helenenberg Helenental Helfenberg Helfert, Joseph Alexander Freiherr von ... Hinweise zum Lexikon

8. Helenenberg Translate this page Österreich Lexikon, A B C D E F G H I J K L M N O P Q R S T U V W X Y Z. Helenenberg- helly, eduard (1/25). Helenenberg - helly, eduard, Helenental. Helenenberg. http://www.aeiou.at/aeiou.encyclop.h/h437113.htm

A B C D ... Helenental Helenenberg Helenenberg siehe Magdalensberg Hinweise zum Lexikon Suche nach hierher verweisenden Seiten

9. References For Helly References for the biography of eduard helly R J Nessel and E L Stark, eduard helly (18841943), Eine nachträgliche Würdigung, Jahresberichte der Deutschen http://www-history.mcs.st-and.ac.uk/References/Helly.html

References for Eduard Helly Biography in Dictionary of Scientific Biography (New York 1970-1990). Books: P L Butzer, R J Nessel and E L Stark, Eduard Helly (1884-1943) : In memoriam, Resultate der Mathematik Articles: Jahresberichte der Deutschen Mathematiker vereinigung H Hochstadt, Eduard Helly, Father of the Hahn-Banach Theorem, The Mathematical Intelligencer I Netuka and J Vesely, Eduard Helly, convexity and functional analysis (Czech), Pokroky Mat. Fyz. Astronom. V M Tikhomirov, Eduard Helly (Russian), Istor.-Mat. Issled. V M Tikhomorov, Eduard Helly, Istoriko- matematicheskie issledovaniya Main index Birthplace Maps Biographies Index History Topics ... Anniversaries for the year JOC/EFR May 2000 School of Mathematics and Statistics University of St Andrews, Scotland The URL of this page is: http://www-history.mcs.st-andrews.ac.uk/history/References/Helly.html

10. Vertriebene Translate this page Hellinger, Ernst (1883-1950), 71, 214-215 Portr. bei I, 182. helly,eduard (1884-1943), 75, 192-194. Hensel, Kurt (1861-1941), 73, 199. http://www.mathematik.uni-bielefeld.de/DMV/archiv/pinl.html

Kollegen in einer dunklen Zeit In den Jahresberichten der DMV zwischen 1969 und 1974 hat Max Pinl unter dem obigen Titel derjenigen Fachkollegen gedacht, die durch die Unmenschlichkeit des nationalsozialistischen Regimes ihre Heimat, ihre Stellung oder gar ihr Leben verloren haben. A B C D ... Z Alt, Frank (1910-) Artin, Emil (1898-1963) Baer, Reinhold (1902-1979) Barneck, Alfred (1885-1964) Basch, Alfred (1882-1958) Baule, Bernhard (1891-1976) Behrend, Felix (1911 - 1962) Bergmann, Gustav (1906- ) Bergmann, Peter (1915- ) Bergman, Stefan (1895-1977) Bernays, Paul (1888-1977) Bernstein, Felix (1878-1956) Bers, Lipman (1914-1993) Berwald, Ludwig (1883-1942) Blumenthal, Otto (1876-1944) Portr. bei S. 82 Bochner, Salomon (1899-1982) Brauer, Alfred (1894-1985) Brauer, Richard (1901-1977) Breuer, Samson (1891-) Busemann, Herbert (1905-) Caemmerer, Hanna von (1914-1971) Cohn-Vossen, Stefan (1902-1936) Courant, Richard (1888-1972) Dehn, Max (1878-1952) Portr. bei S. 182 Duschek, Adalbert (1895-1957) Eckhart, Ludwig (1890-1938) Einstein, Albert (1879-1955)

11. Hellmayr, Carl Eduard Helenenberg helly, eduard (16/25) http://www.aeiou.at/aeiou.encyclop.h/h450515.htm

A B C D ... Hellmer, Edmund von Hellmayr, Carl Eduard Hellmayr, Carl Eduard, * 29. 1. 1878 Wien, † 24. 2. 1944 Orselina bei Locarno ( Schweiz ), 1922-31 am Field Museum of Natural History in Chikago, wo er den Catalogue of Birds (begonnen von C. B. Cory, 9 ) fertig stellte. Ab 1931 wieder in Wien, emigrierte 1938 nach London und in die Schweiz. Literatur: Neue Deutsche Biographie Hinweise zum Lexikon Suche nach hierher verweisenden Seiten

12. Nachrufe Translate this page Heiberg, Johann (1853-1928), 38, 17-23 *. Heller, Siegfried (1876-1970), 73, 1-5.helly, eduard (1884-1943), 82, 128-151 *. Henn, Rudolf (1922-1989), 95, 153 -165. http://www.mathematik.uni-bielefeld.de/DMV/archiv/nachrufe.html

Nachrufe im Jahresbericht der DMV A B C D ... Z Abbe, Ernst (1840-1905) Ahrens, Wilhelm (1872-1927) Avakumovic, Vojislav G. (1910-1990) Bachmann, Paul (1837-1920) Baier, Othmar (1905-1980) Bauer, Gustav (1820-1906) Beck, Hans (1876-1942) Bernstein, Felix (1878-1956) Bieberbach, Ludwig (1886-1982) Bilharz, Herbert (1910-1956) Bjerknes, Carl (1825-1903) Blaschke, Wilhelm (1885- 1962) Bobek, Karl (1855-1899) Boerner, Hermann (1906-1982) Bohl, Piers (1865-1921) Bohr, Harald (1887- 1951) Bolza, Oskar (1857 1942) Bopp, Karl (1877-1934) Bortolotti, Enea (1896-1942) Bos, Werner (1924-1973) Brandt, Heinrich (1886-1954) Brauer, Alfred (1894-1985) Brauer, Richard (1901-1977) Brunn, Hermann (1862-1939) Buka, Felix (1852-1896) Burkhardt, Heinrich (1861-1914) Burmester, Ludwig (1840-1927) Busche, Edmund (1861 1916) Cantor, Georg (1845-1918) Caratheodory, Constantin (1873-1950) Caspar, Max (1880-1956) Nachtrag Caspary, Ferdinand (1853-1901) Curtze, Maximilian (1837-1903) Czuber, Emanuel (1851-1925) Darboux, Gaston (1842-1917) Dembowski, Peter (1928-1971) Deuring, Max (1907-1984)

13. Helly Portrait Portrait of eduard helly eduard helly. JOC/EFR August 2001 http://www-history.mcs.st-and.ac.uk/history/PictDisplay/Helly.html

Eduard Helly JOC/EFR August 2001 The URL of this page is: http://www-history.mcs.st-andrews.ac.uk/history/PictDisplay/Helly.html

14. Helly tree fulfill the hellyproperty. This property is named after theAustrian mathematician eduard helly. helly showed in 1923 that http://www.math.uni-hamburg.de/spag/gd/mitarbeiter/prisner/Pris/Helly.html

The Helly property It turns out that the restriction to intersection graphs of Helly hypergraphs is the most important reason for making things (first of all, recognition ) easier. We may not know all star graphs, but many of them. Now, many natural properties P have the property that every system of P -sets has the Helly-property. Examples are intervals of the real line, or more generally, d -dimensional boxes Also, subtrees of a given tree fulfill the Helly-property. This property is named after the Austrian mathematician Eduard Helly. Helly showed in 1923 that whenever every d+1 sets of a collection of convex sets in R d have nonempty intersection, then the total intersection of these sets must be nonempty too. That coincides with our definition only for d=2 , but see here for applications of this so-called k -Helly property. The dual notion of `Helly' is `conformal'. A hypergraph H is called conformal if its dual H* has the Helly-property. Another formulation is: Every clique of the underlying graph of H should be covered by some hyperedge, that is, The

15. Biography-center - Letter H Hellman, Lillian www.pbs.org/wnet/americanmasters/database/hellman_l.html; helly,eduard wwwhistory.mcs.st-and.ac.uk/~history/Mathematicians/helly.html; http://www.biography-center.com/h.html

Visit a random biography ! Any language Arabic Bulgarian Catalan Chinese (Simplified) Chinese (Traditional) Croatian Czech Danish Dutch English Estonian Finnish French German Greek Hebrew Hungarian Icelandic Indonesian Italian Japanese Korean Latvian Lithuanian Norwegian Polish Portuguese Romanian Russian Serbian Slovak Slovenian Spanish Swedish Turkish H 703 biographies www-history.mcs.st-and.ac.uk/~history/Mathematicians/Herigone.html www-history.mcs.st-and.ac.uk/~history/Mathematicians/De_L'Hopital.html www-history.mcs.st-and.ac.uk/~history/Mathematicians/Holder.html www-history.mcs.st-and.ac.uk/~history/Mathematicians/Hormander.html Haab, Otto www.whonamedit.com/doctor.cfm/1825.html Haanpää, Pentti www.kirjasto.sci.fi/haanpaa.htm www-history.mcs.st-and.ac.uk/~history/Mathematicians/Haar.html Haarlem, Cornelis van www.kfki.hu/~arthp/bio/c/cornelis/biograph.html Haavelmo, Trygve www.nobel.se/economics/laureates/1989/haavelmo-bio.html Haavikko, Paavo www.kirjasto.sci.fi/haavikko.htm Haber, Fritz www.nobel.se/chemistry/laureates/1918/haber-bio.html Habib ibn Zayd al-Ansari,

16. Teubner Online Translate this page Butzer, PL, Gieseler, S., Kaufmann, F., Nessel, RJ, Stark, EL eduard helly(1884-1943). Eine nachträgliche Würdigung, 82, 128-151 (1980). http://www.teubner.de/teubner/service/b81-84_dmv.htm

Rechte und Lizenzen Content Syndication Anfahrtsskizze Privatkundenservice ... Kataloge und Prospekte Produktangebot Zeitschriften Seminare Anregungen und Kritik FAQ ... Ansprechpartner Autor Titel ISBN Stichwort Jahresbericht der Deutschen Mathematiker-Vereinigung Register der Bände Begehr, H. : Alexander Dinghas in memoriam Bernays, P. : Nachwort Boerner, H. : Karl Maruhn in memoriam Chalmers, B.L., Taylor, G.D. : Uniform Approximation with Constraints Dorfmeister, J., Koecher, M. : Reguläre Kegel Gaier, D. : Konforme Abbildungen mehrfach zusammenhängender Gebiete Koecher, M., Dorfmeister, J. : Reguläre Kegel Kunz, E. : Über die Anzahl der Gleichungen, die zur Beschreibung einer algebraischen Varietät nötig sind Prestel, A. : Entscheidbarkeit mathematischer Theorien Rao, G.S.

17. Full Alphabetical Index Translate this page Earle (490*) Heegaard, Poul (380*) Heilbronn, Hans (129*) Heine, Heinrich (268*)Heisenberg, Werner (621*) Hellinger, Ernst (75*) helly, eduard (157*) Helmholtz http://www.geocities.com/Heartland/Plains/4142/matematici.html

Completo Indice Alfabetico Cliccare su una lettera sottostante per andare a quel file. A B C D ... XYZ Cliccare sotto per andare agli indici alfabetici separati A B C D ... XYZ Il numero di parole nella biografia e' dato in parentesi. Un * indica che c'e' un ritratto. A Abbe , Ernst (602*) Abel , Niels Henrik (286*) Abraham bar Hiyya (240) Abraham, Max Abu Kamil Shuja (59) Abu'l-Wafa al'Buzjani (243) Ackermann , Wilhelm (196) Adams, John Couch Adams, Frank Adelard of Bath (89) Adler , August (114) Adrain , Robert (79) Aepinus , Franz (124) Agnesi , Maria (196*) Ahlfors , Lars (725*) Ahmed ibn Yusuf (60) Ahmes Aida Yasuaki (114) Aiken , Howard (94) Airy , George (313*) Aitken , Alexander (825*) Ajima , Chokuyen (144) Akhiezer , Naum Il'ich (248*) al'Battani , Abu Allah (194) al'Biruni , Abu Arrayhan (306*) al'Haitam , Abu Ali (269*) al'Kashi , Ghiyath (73) al'Khwarizmi , Abu (123*) Albanese , Giacomo (282) Albert of Saxony Albert, Abraham Adrian (121*) (158*) Alberti , Leone (181*) Alberto Magno, San (109*) Alcuin di York (237*) Aleksandrov , Pave (160*) Alembert , Jean d' (291*) Alexander , James (163) Amringe , Howard van (354*) Amsler , Jacob (82) Anassagora di Clazomenae (169) Anderson , Oskar (67) Andreev , Konstantin (117) Angeli , Stefano degli (234) Anstice , Robert (209) Antemio of Tralles (55) Antifone il Sofista (125) Apollonio di Perga (276) Appell , Paul (1377) Arago , Dominique (345*) Arbogasto , Louis (87) Arbuthnot , John (251*) Archimede di Siracusa (467*) Archita of Tarentum (103) Argand , Jean (81) Aristeo il Vecchio (44) Aristarco di Samo (183) Aristotele Arnauld , Antoine (179)

18. OPE-MAT - Mathématiciens John Hellinger, Ernst Hobbes, Thomas Hadamard, Jacques helly, eduard Hobson, Ernest Hahn, Hans Helmholtz, Hermann von http://www.gci.ulaval.ca/PIIP/math-app/Historique

19. AMSMAA Joint Archives Committee Hellinger, Ernst D. 18831950. Northwestern Northwestern. helly, eduard 1884-1943. AAM AAM. Hill, Thomas 1818-1891. Harvard U. NUCMC 65-1251. http://www.ams.org/mathweb/History/collections.html

AMSMAA Joint Archives Committee List of Archival Collections The names in this alphabetical list are represented by archival collections at the given locations in North America. No attempt is made to indicate where papers or letters by one person may also be located in the collection of another. Such cross references are often given in the collection descriptions in the indicated sources. Some mathematicians have been included for whom there are no known collections of papers. They are here only as reminders of the inevitable incompleteness of the historical record. Still there may be a possibility of filling in such gaps sometime. Corrections and additions to the list are welcomed; please see How to Provide Further Information for the List of Collections . The key to the abbreviations is given at the end. Name Birth and Death Dates of Person or Range of Collection for Institutions Location (See abbreviations at end.) Source of Information (See abbreviations at end.)

20. Liste Alphabétique Des Mathématiciens Translate this page Heaviside (Oliver), Anglais (1850-1925). Heine (Heinrich eduard), Allemand (1821-1881).helly (eduard), Autrichien (1884-1943). Hensel (Kurt), Allemand (1861-1941). http://www.cegep-st-laurent.qc.ca/depar/maths/noms.htm

Abel (Niels Henrik) Agnesi (Maria Guetana) Italienne (1718-1799) Alembert (Jean Le Rond d') Alexander (James Waddell) Alexandroff (Pavel Sergeevich) Russe (1896-1982) Apian (Peter Benneuwitz, dit) Allemand (1495-1552) Apollonios de Perga Grec(v.~262-v.~180) Appel (Paul) Grec (~287-~212) Aristote Grec (~384-~322) Arzela (Cesare) Italien (1847-1912) Ascoli (Guilio) Italien (1843-1896) Babbage (Charles) Anglais (1792-1871) Banach (Stefan) Polonais (1892-1945) Argand (Jean Robert) Suisse (1768-1822) Barrow (Isaac) Anglais (1630-1677) Bayes (Thomas) Anglais (1702-1761) Bellavitis (Giusto) Italien (1803-1880) Beltrami (Eugenio) Italien (1835-1900) Bernays (Paul) Suisse (1888-1977) Bernoulli (Daniel) Suisse (1700-1782) Bernoulli (Jacques) Suisse (1654-1705) Bernoulli (Jean) Suisse (1667-1748) Allemand (1878-1956) Bernstein (Sergei Natanovich) Russe (1880-1968) Bertrand (Josepn) Bessel (Friedrich) Allemand (1784-1846) Birkoff (George David) Bliss (Gilbert Ames) Bochner (Salomon) Allemand (1899-1982) Bolyai (Janos) Hongrois (1802-1860) Bolzano (Bernhard) Bombelli (Raffaele) Italien (1522-1572) Bonnet (Ossian) Boole (George) Anglais (1815-1864) Bourbaki (Nicolas) Braikenridge (William) Anglais (v.1700-1762)

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