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VERSION:2.0
PRODID:Custom
X-WR-TIMEZONE:America/Toronto
BEGIN:VTIMEZONE
TZID:America/Toronto
X-LIC-LOCATION:America/Toronto
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:19700308T020000
RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=2SU;BYMONTH=3
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:19701101T020000
RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=1SU;BYMONTH=11
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BEGIN:VEVENT
UID:mathcal-17@shafikov.ca
DTSTAMP:19980119T070000Z
SUMMARY:Higher-Order Networks: Topology and Geometry (Sara Najem - American University of Beirut)
DTSTART;TZID=America/Toronto:20260917T153000
DTEND;TZID=America/Toronto:20260917T163000
DESCRIPTION:Networks describe dyadic interactions and discard higher-order ones in complex systems. I will trace a path from weighted networks and their statistical-physics measures and show their limitations\, leading to simplicial complexes built from triangles\, tetrahedra\, and higher simplices that pairwise edges cannot encode. Topological invariants such as the Betti numbers\, the Euler characteristic\, torsion\, and the Ihara–Zeta function are introduced. Connes' spectral triplet then supplies geometric measures\, a spectral distance\, spectral dimension\, and a discrete curvature\, that complement these topological invariants. I will carry this out by illustrating the framework on a dataset of musical compositions\, where chords (notes played simultaneously) form natural higher-order structures.
LOCATION:MC 108
END:VEVENT
BEGIN:VEVENT
UID:mathcal-52@shafikov.ca
DTSTAMP:19980119T070000Z
SUMMARY:TBA (Omid Amini - Ecole Polytechnique,  Paris)
DTSTART;TZID=America/Toronto:20261022T153000
DTEND;TZID=America/Toronto:20261022T163000
DESCRIPTION:
LOCATION:MC 108
END:VEVENT
BEGIN:VEVENT
UID:mathcal-59@shafikov.ca
DTSTAMP:19980119T070000Z
SUMMARY:TBA (Benjamin  Landon  - University of Toronto)
DTSTART;TZID=America/Toronto:20261029T153000
DTEND;TZID=America/Toronto:20261029T163000
DESCRIPTION:
LOCATION:MC 108
END:VEVENT
END:VCALENDAR