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(in reverse chronological order)

Future Talks / Travel: Punta Arenas, Chile (October or November, 2019, @MariaRonco)?, CRM (July 1-31, 2019), Da Nang (May 27-31, 2019)?, Hefei (November 5-9, 2018)?, UTM (October 12, 2018)?, Bonn by Web (late May, 2018)?, Simons Center (Stony Brook, May 6-19?, 2018), Matemale (April 22-27, 2018), Leiden (April 14-21, 2018), McMaster (March 29, 2018).

Highlighted Talks:     (see all talks)

Talks Since November 1998:     (199 listed, 63 highlighted).

Matemale-1804, Perimeter-180312, Buffalo-170916, LesDiablerets-1708, Sydney-1708, Toulouse-1705, McGill-1702, GWU-1612, MIT-1612, Niagara-1612, Indiana-1611, UNC-1610, Toronto-1609, LesDiablerets-1608, Greece-1607, SciRen-1605, NCSU-1604, Iowa-1603, Northeastern-1602, Leiden-1601, MoscowByWeb-1511, MUGS-1510, Loyola-1510, Cornell-150925, LesDiablerets-1508, Aarhus-1507, Qinhuangdao-1507, Louvain-1506, Toronto-150514, CMU-1504, Georgetown-1503, TCDSB-150213, MUGS-1501, Hamilton-1412, Fields-1411, Treehouse-1410, ClassroomAdventures-1408, CanadaMathCamp-1407, Bannoye-1407, Oberwolfach-1405, Vienna-1402, McMaster-140130, ClassroomAdventures-1401, HUJI-140101, Grenoble-1311, Lausanne-131118, Bern-131104, Zurich-1310, Geneva-131024, Geneva-131008, Zurich-130919, Geneva-130917, ClassroomAdventures-1308, CanadaMathCamp-1308, CUMC-1307, Montreal-1306, Aarhus-1305, Singapore-1305, NhaTrang-1305, Chicago-1303, Toronto-1303, Sheffield-130206, Cambridge-1301, Oxford-130121, Imperial-130118, Newton-1301, Israel-1301, MtAllison-121013, Hamburg-1208, CanadaMathCamp-1208, Caen-1206, Regina-1206, Binghamton-1203, GWU-1203, Buffalo-1203, CanadianPerspectives-1110, StBonaventure-1110, Strasbourg-1109, Oregon-1108, Colombia-1107, Geneva-110531, SwissKnots-1105, Tennessee-1103, RCI-110213, Toronto-110110, Chicago-1009, Montpellier-1006, Toronto-1005, Goettingen-1004, Luminy-1004, UWO-100225, Fields-0911, UofT-GS-090930, Bonn-0908, HUJI-090727, Mathcamp-0907, Paris-0906, Trieste-0905, KSU-090407, Bogota-0902, PSU-090205, Northeastern-081028, Copenhagen-081009, Sandbjerg-0810, MSRI-0808, CUMC-0807, Geneva-0805, Zurich-080513, Oberwolfach-0805, Brown-071114, UofT-GS-071023, Fields-0709, Hanoi-0708, Tianjin-0707, Aarhus-0706, Kyoto-0705, TiTech-070508, Buffalo-070323, UofT-GS-070308, Columbia-070209, HUJI-061228, Uppsala-0609, UofT-0608, Istanbul-0606, Iowa-060120, HUJI-060101, GaTech-051021, UofT-051014, UQAM-051001, Oberwolfach-0506, Utah-0506, Amsterdam-050418, LSU-0504, UIUC-050311, GiftedConference-050215, GWU-050213, MASSU-050119, UofT-GS-050113, UofT-041208, York-041108, Harvard-0410, Buffalo-0410, Oporto-0407, GWU-0405, Microsoft-040413, Rochester-040402, MSU-0402, UWO-040213, UofT-040205, Queens-040123, UofT-031208, BIRS-0311, Wayne-031103, UofT-031002, UIC-030905, Warsaw-030711, Potsdam-030604, Cornell-030501, Harvard-030418, UofT-030331, Columbia-030328, JHU-0303, UNC-0302, HUJI-021230, BU-021101, UofT-021010, McMaster-021005, UQAM-020927, HUJI-020613, BIU-020320, Toronto-0202, Toronto-020211, HUJI-011104, Kyoto-0109, Calgary-010824, Davis-010813, HUJI-010118, Fields-010111, MSRI-001206, CUNY-001205, HUJI-001116, Compugen-001101, Lehigh-0006, Riverside-000429, UCB-0004, UCB-000420, CalTech-000221, UCB-000215, UCSD-000113, GaTech-991203, UMD-991029, JHU-991027, UCB-9910, UCB-990915, Srni-9901, HUJI-981203, Aarhus-9811-2, Aarhus-9811-1, BGU-981103

On first inspection, in their jars, or aquariums, or ouroboriums, they appear to be simply domesticated serpents, writhing as they do suspended in the ether. But of course, there's more to mythological creatures, even domesticated varieties, than meets the eye. Know this about the ouroborus: when one chooses to bite its own tail - a choice which sooner or later every one of its kind is destined to make - it cannot release it. It will spend the rest of its existence as a never-ending loop. It might twist and writhe and flatten and flex, but it is forever hooped.

An ouroborus in a jar on the shelf, from the Planetarium.