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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:6a60ce303bdce
DTSTART;TZID=America/Toronto:20260724T113000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260724T123000
URL:https://uwaterloo.ca/pure-mathematics/events/ergodic-theory-learning-se
 minar-julius-frizzell-examples
SUMMARY:Ergodic Theory Learning Seminar | Julius Frizzell | Examples of\nFa
 ctors and Conditional expectation
CLASS:PUBLIC
DESCRIPTION:JULIUS FRIZZELL\, UNIVERSITY OF WATERLOO\n\n_Examples of Factor
 s and Conditional expectation_\n\nWe will discuss examples of factors of m
 easure preserving systems\narising from products and skew-products. We wil
 l also briefly define\nregular and separable extensions. We will then intr
 oduce the concept\nof Conditional expectation and prove some of its basic 
 properties.\n\nMC 5417
DTSTAMP:20260722T140536Z
END:VEVENT
BEGIN:VEVENT
UID:6a60ce303f80a
DTSTART;TZID=America/Toronto:20260722T153000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260722T170000
URL:https://uwaterloo.ca/pure-mathematics/events/differential-geometry-work
 ing-seminar-benoit-charbonneau
SUMMARY:Differential Geometry Working Seminar | Benoit Charbonneau | The Di
 rac\noperator on homogeneous manifolds
CLASS:PUBLIC
DESCRIPTION:BENOIT CHARBONNEAU\, UNIVERSITY OF WATERLOO\n\n_The Dirac opera
 tor on homogeneous manifolds_\n\nMC 5417
DTSTAMP:20260722T140536Z
END:VEVENT
BEGIN:VEVENT
UID:6a60ce30403ee
DTSTART;TZID=America/Toronto:20260723T133000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260723T150000
URL:https://uwaterloo.ca/pure-mathematics/events/computability-learning-sem
 inar-joey-lakerdas-gayle-dominant
SUMMARY:Computability Learning Seminar | Joey Lakerdas-Gayle | Dominant\nfu
 nctions and high sets
CLASS:PUBLIC
DESCRIPTION:JOEY LAKERDAS-GAYLE\, UNIVERSITY OF WATERLOO\n\n_Dominant funct
 ions and high sets_\n\nWe prove Martin's theorem that \\(A'\\geq_T\\empty
 set''\\) if and only if\n$A$ computes a function that bounds every total c
 omputable function\nalmost everywhere. Then we will begin discussing the i
 nfinite injury\npriority tree construction of Sacks' theorem that there ex
 ists a high\nincomplete c.e. set.\n\nMC 5403
DTSTAMP:20260722T140536Z
END:VEVENT
BEGIN:VEVENT
UID:6a60ce3041011
DTSTART;TZID=America/Toronto:20260722T140000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260722T153000
URL:https://uwaterloo.ca/pure-mathematics/events/differential-geometry-work
 ing-seminar-facundo-camano
SUMMARY:Differential Geometry Working Seminar | Facundo Camano | Classifyin
 g\nALF Gravitational Instantons of Cyclic Type
CLASS:PUBLIC
DESCRIPTION:FACUNDO CAMANO\, UNIVERSITY OF WATERLOO\n\n_Classifying ALF Gra
 vitational Instantons of Cyclic Type_\n\nI will go over the paper ”Rigid
 ity for Multi-Taub-NUT Metrics” by\nVincent Minerbe.\n\nMC 5417
DTSTAMP:20260722T140536Z
END:VEVENT
BEGIN:VEVENT
UID:6a60ce3041e1c
DTSTART;TZID=America/Toronto:20260715T153000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260715T170000
URL:https://uwaterloo.ca/pure-mathematics/events/differential-geometry-work
 ing-seminar-alexander-teeter
SUMMARY:Differential Geometry Working Seminar | Alexander Teeter |\nFreedma
 n’s Results and Donaldson’s Exclusions: Classification of\n4-manifolds
  by intersection forms
CLASS:PUBLIC
DESCRIPTION:ALEXANDER TEETER\, UNIVERSITY OF WATERLOO\n\n_Freedman’s Resu
 lts and Donaldson’s Exclusions: Classification of\n4-manifolds by inters
 ection forms_\n\nWe look at Serre's algebraic classification of symmetric 
 integral\nunimodular forms\, and then Freedman's topological classificatio
 n of\ntopological 4-manifolds by their intersection forms. After\, we take
  a\nturn to looking at Donaldson's exclusions\, finding that smooth\n4-man
 ifolds are not as well behaved. Time permitting\, we will see how\nDonalds
 on's exclusions naturally lead to the existence of exotic\n\\(\\mathbb{R}^
 4\\)s.\n\nMC 5417
DTSTAMP:20260722T140536Z
END:VEVENT
BEGIN:VEVENT
UID:6a60ce304296a
DTSTART;TZID=America/Toronto:20260715T140000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260715T153000
URL:https://uwaterloo.ca/pure-mathematics/events/differential-geometry-work
 ing-seminar-spencer-kelly-sobolev
SUMMARY:Differential Geometry Working Seminar | Spencer Kelly | The Sobolev
 \nEmbedding Theorem and The Berger-Ebin Decomposition Theorem
CLASS:PUBLIC
DESCRIPTION:SPENCER KELLY\, UNIVERSITY OF WATERLOO\n\n_The Sobolev Embeddin
 g Theorem and The Berger-Ebin Decomposition\nTheorem_\n\nServing as a part
  two of my previous talk\, in this talk we will begin\nwith briefly talkin
 g about the Sobolev Embedding Theorem for\n\\(L^2\\)-based Sobolev spaces.
  We will then move on to deriving the\nBerger-Ebin decomposition theorem f
 or differential operators with\ninjective symbol.\n\nMC 5417
DTSTAMP:20260722T140536Z
END:VEVENT
BEGIN:VEVENT
UID:6a60ce30436ed
DTSTART;TZID=America/Toronto:20260716T110000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260716T120000
URL:https://uwaterloo.ca/pure-mathematics/events/geometry-and-topology-semi
 nar-mainak-poddar-equivaraint
SUMMARY:Geometry and Topology Seminar | Mainak Poddar | Equivaraint princip
 al\nbundles over toric DM stacks
CLASS:PUBLIC
DESCRIPTION:MAINAK PODDAR\, IISER PUNE\n\n_Equivaraint principal bundles o
 ver toric DM stacks_\n\nWe extend the classification of torus equivariant 
 framed principal\nbundles over toric varieties using Tits buildings by Kav
 eh\, Mannon\,\nand Huang to such bundles over toric Deligne-Mumford stacks
 . A\ncorollary is that any such bundle over a stacky projective line\nspli
 ts. This is a joint work with Chandranandan Gangopadhyay and\nRamandeep Si
 ngh Arora.\n\nMC 5479
DTSTAMP:20260722T140536Z
END:VEVENT
BEGIN:VEVENT
UID:6a60ce30442b5
DTSTART;TZID=America/Toronto:20260716T133000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260716T150000
URL:https://uwaterloo.ca/pure-mathematics/events/computability-learning-sem
 inar-beining-mu-degree
SUMMARY:Computability Learning Seminar | Beining Mu | Degree of categoricit
 y\nand treeable degrees
CLASS:PUBLIC
DESCRIPTION:BEINING MU\, UNIVERSITY OF WATERLOO\n\n_Degree of categoricity 
 and treeable degrees_\n\nIn this seminar\, we will discuss treeable degree
 s and degree of\ncategoricity. We will introduce past results on which deg
 rees can or\ncannot be a degree of categoricity and when degrees of catego
 ricity\ncoincide with treeable degrees. We will also introduce a notion\no
 f \\(\\Pi^0_1\\) singletons as an example of treeable degrees and their\n
 relation to degree of categoricity.\n\nMC 5403
DTSTAMP:20260722T140536Z
END:VEVENT
BEGIN:VEVENT
UID:6a60ce3044f33
DTSTART;TZID=America/Toronto:20260717T113000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260717T123000
URL:https://uwaterloo.ca/pure-mathematics/events/ergodic-theory-learning-se
 minar-julius-frizzell-factors
SUMMARY:Ergodic Theory Learning Seminar | Julius Frizzell | Factors of Meas
 ure\nPreserving Systems
CLASS:PUBLIC
DESCRIPTION:JULIUS FRIZZELL\, UNIVERSITY OF WATERLOO\n\n_Factors of Measure
  Preserving Systems_\n\nWe will discuss the basic idea of homomorphisms of
  measure spaces and\nmeasure preserving systems and what it means for a me
 asure preserving\nsystem to be a factor of another measure preserving syst
 em.\n\nMC 5417
DTSTAMP:20260722T140536Z
END:VEVENT
BEGIN:VEVENT
UID:6a60ce3045b98
DTSTART;TZID=America/Toronto:20260716T110000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260716T120000
URL:https://uwaterloo.ca/pure-mathematics/events/algebraic-geometry-working
 -seminar-jack-jia-complex-rank
SUMMARY:Algebraic Geometry Working Seminar | Jack Jia | Complex Rank Analog
 s\nof Representation Categories
CLASS:PUBLIC
DESCRIPTION:JACK JIA\, UNIVERSITY OF WATERLOO\n\n_Complex Rank Analogs of R
 epresentation Categories_\n\nCategories of representations of groups are w
 ell-behaved: They are\nabelian (behave like module categories)\, symmetric
  monoidal (have\ntensor products)\, every object has a dual and is semi-si
 mple\, to name\na few. A natural question to ask is whether every category
  that\nexhibits similar behaviour is a representation category. Deligne\np
 roved a remarkable theorem that shows every symmetric tensor category\nwit
 h some imposed growth condition is in fact a category of\nrepresentations.
  Moreover\, he constructed some symmetric tensor\ncategories with faster-t
 han-exponential growth-these are so-called\nDeligne categories\, which can
  be interpreted as complex rank analogs\nof classical representation categ
 ories. In this talk\, I will introduce\nthe notion of symmetric tensor cat
 egories\, state Deligne's Theorem\,\nand construct some of the Deligne cat
 egories. \n\nMC 5403
DTSTAMP:20260722T140536Z
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