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SUMMARY:Beyond Gauss’ Pizza Theorem: From wrinkly isometry to snap-throu
 gh
DTSTART:20260604T131500Z
DTEND:20260604T141500Z
DTSTAMP:20260614T105500Z
UID:indico-event-9657@indico.fysik.su.se
DESCRIPTION:Speakers: Dominic Vella (Mathematical Institute\, University o
 f Oxford)\n\nThin objects are easy to deform\, as we see in everyday life:
  a piece of paper crumples\, while an umbrella may invert in the wind.  I
 t is also clear that such thin structures choose to bend\, rather than com
 press\, whenever possible. Gauss’ "Remarkable Theorem” restricts how s
 uch pure bending deformations can happen\, and its consequences are everyw
 here from pizza slices to the domed roofs of buildings. Nevertheless\, I
 ’ll show how Gauss’ Theorem can be subverted by thin sheets apparently
  allowing them to change Gaussian curvature. At the same time\, a small bu
 t finite thickness may lead to snap-through\, which reveals some intricate
  nonlinear dynamics.\nAbout the speaker:\nDominic Vella studied at Trinity
  College\, University of Cambridge\, and obtained his PhD from the Departm
 ent of Applied Mathematics and Theoretical Physics (DAMPT) in 2007. He rem
 ained at Trinity College as a Junior Research Fellow until 2010. From 2007
  to 2009\, he was also a research fellow at Ecole Normale Supérieure (ENS
 ) and ESPCI in Paris\, supported by the Royal Commission for the Exhibitio
 n of 1851. In 2011\, he moved to the Mathematical Institute in the Univers
 ity of Oxford\, where he became a Professor of Applied Mathematics in 2016
 . He is the recipient of a Leverhulme Trust Research Fellowship\, an ERC s
 tarting grant and the Whitehead Prize of the London Mathematical Society. 
 He works on various aspect of fluid and solid mechanics. In particular\, h
 e studied and coined the Cheerios effect. \n \n\nhttps://indico.fysik.su
 .se/event/9657/
URL:https://indico.fysik.su.se/event/9657/
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