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DTSTART:20260308T070000
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TZOFFSETFROM:-0400
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DTSTART:20251102T060000
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BEGIN:VEVENT
UID:6a3c217de10da
DTSTART;TZID=America/Toronto:20260625T110000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260625T120000
URL:https://uwaterloo.ca/pure-mathematics/events/algebraic-geometry-seminar
 -16
SUMMARY:Algebraic geometry seminar
CLASS:PUBLIC
DESCRIPTION:CATHERINE ST-PIERRE\, UNIVERSITY OF WATERLOO\n\n_Group Actions 
 in Non-Commutative Algebraic Geometry: a survey of\nhomological property a
 nd invariants_\n\nWe survey non-commutative analogues of classical regular
 ity\,\nGorenstein\, and Cohen-Macaulay properties in the framework of\nArt
 in-Schelter. After reviewing the foundational homological\nproperties that
  govern this theory\, we will focus on the structure of\ninvariant rings u
 nder group and Hopf algebra actions and review some\nnoncommutative analog
 ues of classical results in invariant theory to\ncharacterize the invarian
 t rings of noncommutative rings. The talk\nconcludes with new results exte
 nding this invariant-theoretic\nframework.\n\nMC 5403
DTSTAMP:20260624T182709Z
END:VEVENT
BEGIN:VEVENT
UID:6a3c217de3c00
DTSTART;TZID=America/Toronto:20260624T153000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260624T170000
URL:https://uwaterloo.ca/pure-mathematics/events/differential-geometry-work
 ing-seminar-196
SUMMARY:Differential Geometry Working Seminar
CLASS:PUBLIC
DESCRIPTION:FACUNDO CAMANO\, UNIVERSITY OF WATERLOO\n\n_Equivalent Formulat
 ions of Monopole Asymptotics_\n\nI will go over three ways of defining mon
 opole asymptotics and prove\nthey are all equivalent for finite energy sol
 utions.\n\nMC 4058
DTSTAMP:20260624T182709Z
END:VEVENT
BEGIN:VEVENT
UID:6a3c217de45b2
DTSTART;TZID=America/Toronto:20260624T140000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260624T153000
URL:https://uwaterloo.ca/pure-mathematics/events/differential-geometry-work
 ing-seminar-195
SUMMARY:Differential Geometry Working Seminar
CLASS:PUBLIC
DESCRIPTION:KALEB RUSCITTI\, UNIVERSITY OF WATERLOO\n\n_Extending Hitchin's
  connection across nodal curves_\n\nHitchin gave a projectively flat conne
 ction on the 'Verlinde bundle'\nover the moduli space of complex structure
 s on a compact\ngenus \\(g>=2\\) surface (Flat connections and geometric 
 quantization\,\n1990). Such a surface can be deformed to a stable curve wi
 th nodal\nsingularities\, and I will discuss the extension of the Verlinde
  bundle\nand Hitchin's connection across such deformations.\n\nMC 4058
DTSTAMP:20260624T182709Z
END:VEVENT
BEGIN:VEVENT
UID:6a3c217de4e4e
DTSTART;TZID=America/Toronto:20260619T113000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260619T123000
URL:https://uwaterloo.ca/pure-mathematics/events/ergodic-theory-learning-se
 minar-4
SUMMARY:Ergodic Theory Learning Seminar
CLASS:PUBLIC
DESCRIPTION:JULIUS FRIZZELL\, UNIVERSITY OF WATERLOO\n\n_Generic Measures a
 nd Unitary Transformations_\n\nWe continue our discussion of generic measu
 res and prove some facts\nabout unitary transformations\, which moves us t
 oward a proof of Roth's\ntheorem.\n\nMC 5417
DTSTAMP:20260624T182709Z
END:VEVENT
BEGIN:VEVENT
UID:6a3c217de574a
DTSTART;TZID=America/Toronto:20260625T133000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260625T150000
URL:https://uwaterloo.ca/pure-mathematics/events/computability-learning-sem
 inar-174
SUMMARY:Computability Learning Seminar
CLASS:PUBLIC
DESCRIPTION:BEINING MU\, UNIVERSITY OF WATERLOO\n\n_Thickness Lemma and Inf
 inite Injury Priority Argument_\n\nIn this talk\, I will present Strong Th
 ickness Lemma\, which states that\nevery piecewise computable c.e. set has
  a thick subset which lies\noutside of an upper cone of a non-computable c
 .e. set\, as an example\nof infinite injury priority argument. In addition
 \, I will discuss how\nthickness lemma implies the lack of least upper bou
 nd for infinite\nascending c.e. degrees.\n\nMC 5403
DTSTAMP:20260624T182709Z
END:VEVENT
BEGIN:VEVENT
UID:6a3c217de5f7c
DTSTART;TZID=America/Toronto:20260617T153000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260617T170000
URL:https://uwaterloo.ca/pure-mathematics/events/differential-geometry-work
 ing-seminar-194
SUMMARY:Differential Geometry Working Seminar
CLASS:PUBLIC
DESCRIPTION:JACQUES VAN WYK\, UNIVERSITY OF WATERLOO\n\n_Generalised Comple
 x Structures on Products of Lie Groups_\n\nLet \\(M\\) be an even-dimens
 ional manifold\, and let \\(H\\) be a\nclosed three-form on \\(M\\). An
  \\(H\\)-twisted generalised complex\nstructure on \\(M\\) is an endomo
 rphism of \\(TM \\oplus T^*M\\)which\nsquares to −1\, preserves the nat
 ural pseudometric of \\(TM \\oplus\nT^*M\\)\, and whose \\(i\\)-eigenbund
 le is closed under the \\(H\\)-twisted\nDorfman bracket. A natural questio
 n is given a fixed closed\nthree-form \\(H\\) on \\(M\\)\, does there exi
 st an \\(H\\)-twisted\ngeneralised complex structure on \\(M\\)? We explor
 e this question for\nproducts of compact simple Lie groups. This is motiva
 ted by Marco\nGualtieri’s result that any even-dimensional Lie group wit
 h a\nbiinvariant metric admits a generalised complex structure.\n\nMC 4058
DTSTAMP:20260624T182709Z
END:VEVENT
BEGIN:VEVENT
UID:6a3c217de6b0f
DTSTART;TZID=America/Toronto:20260618T133000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260618T150000
URL:https://uwaterloo.ca/pure-mathematics/events/computability-learning-sem
 inar-173
SUMMARY:Computability Learning Seminar
CLASS:PUBLIC
DESCRIPTION:JOEY LAKERDAS-GAYLE\, UNIVERSITY OF WATERLOO\n\n_Sacks' Splitti
 ng Theorem on a tree_\n\nWe will prove Sacks' Splitting Theorem following 
 the method of Steffen\nLempp which uses a dynamically constructed priority
  tree.\n\nMC 5403
DTSTAMP:20260624T182709Z
END:VEVENT
BEGIN:VEVENT
UID:6a3c217de741a
DTSTART;TZID=America/Toronto:20260617T140000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260617T153000
URL:https://uwaterloo.ca/pure-mathematics/events/differential-geometry-work
 ing-seminar-193
SUMMARY:Differential Geometry Working Seminar
CLASS:PUBLIC
DESCRIPTION:ALEX PAWELKO\, UNIVERSITY OF WATERLOO\n\n_Adiabatic Limits of C
 oassociative Fibrations_\n\nI will be going through Donaldson’s paper 
 ”Adiabatic limits of\nco-associative KovalevLefschetz fibrations”.\n\n
 MC 4058
DTSTAMP:20260624T182709Z
END:VEVENT
BEGIN:VEVENT
UID:6a3c217de7bce
DTSTART;TZID=America/Toronto:20260618T110000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260618T120000
URL:https://uwaterloo.ca/pure-mathematics/events/algebraic-geometry-working
 -seminar-102
SUMMARY:Algebraic Geometry Working Seminar
CLASS:PUBLIC
DESCRIPTION:JIAHUI HUANG\, UNIVERSITY OF WATERLOO\n\n_Motivic Integration o
 n Artin Stacks_\n\nWe discuss the twisted arc space of Artin stacks and ne
 cessary\nmodifications to perform motivic integration on them.\n\nMC 5403
DTSTAMP:20260624T182709Z
END:VEVENT
BEGIN:VEVENT
UID:6a3c217de8356
DTSTART;TZID=America/Toronto:20260611T110000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260611T120000
URL:https://uwaterloo.ca/pure-mathematics/events/algebraic-geometry-seminar
 -15
SUMMARY:Algebraic Geometry Seminar
CLASS:PUBLIC
DESCRIPTION:MATTHEW SATRIANO\, UNIVERSITY OF WATERLOO\n\n_An introduction t
 o toric stacks_\n\nToric stacks are a tractable subclass of stacks due to 
 their\ncombinatorial structure. They can serve as an introduction to stack
 s\nin the same way that toric varieties can be an introduction to\nschemes
 . We will show how one can gain insight into the geometry of\ntoric stacks
  with simple pictures of fans and marked points.\n\nMC 5403
DTSTAMP:20260624T182709Z
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