BEGIN:VCALENDAR VERSION:2.0 PRODID:icalendar-ruby CALSCALE:GREGORIAN METHOD:PUBLISH BEGIN:VTIMEZONE TZID:Europe/Vienna BEGIN:DAYLIGHT DTSTART:20250330T030000 TZOFFSETFROM:+0100 TZOFFSETTO:+0200 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3 TZNAME:CEST END:DAYLIGHT BEGIN:STANDARD DTSTART:20241027T020000 TZOFFSETFROM:+0200 TZOFFSETTO:+0100 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10 TZNAME:CET END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260424T125158Z UID:1741185000@ist.ac.at DTSTART:20250305T153000 DTEND:20250305T163000 DESCRIPTION:Speaker: Helmut Pottmann\nhosted by Matthew Kwan and Robert Sei ringer \nAbstract: Abstract: The geometry of simply isotropic 3-space is o ne of the classical Cayley-Klein geometries. Despite its degenerate metric \, it possesses numerous results that are very similar to their Euclidean counterparts. Isotropic geometry appears naturally in mechanics and struct ural design via the Airy stress surface and leads to new insights on mater ial-minimizing forms and structures\, smoothness concepts for polyhedral s urfaces and the design of triangle meshes with controlled roughness. Moreo ver\, isotropic geometry turns out to be useful for the computational solu tion of difficult Euclidean problems. One first solves the isotropic count erpart and then uses it to initialize an optimization algorithm for the nu merical computation of Euclidean solutions. This is demonstrated at hand o f several examples\, most notably for the design of flexible quad meshes w ith planar faces (Q-nets). Based on an appropriate novel definition of iso metric maps between surfaces in isotropic 3-space one can completely chara cterize flexible Q-nets in isotropic 3- space. Surprisingly\, hardly visib le shape changes lead to Euclidean flexible Q-nets. LOCATION:Raiffeisen Lecture Hall\, Central Building\, ISTA ORGANIZER:Stephanie.Dolot@ist.ac.at SUMMARY:Helmut Pottmann: Isotropic Geometry: New Results with Applications in Geometric Computing URL:https://talks-calendar.ista.ac.at/events/5573 END:VEVENT END:VCALENDAR