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DTSTART:20260308T070000
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DTSTART:20250309T070000
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UID:69ab738e2e6ec
DTSTART;TZID=America/Toronto:20260310T143000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260310T154500
URL:https://uwaterloo.ca/pure-mathematics/events/model-theory-working-semin
 ar-39
SUMMARY:Model Theory Working Seminar
CLASS:PUBLIC
DESCRIPTION:RAHIM MOOSA\, UNIVERSITY OF WATERLOO\n\n_Definable groups in CC
 M_\n\nI will continue totalk about “Strongly minimal groups in the theor
 y\nof compact complex maniflds\".\n\nMC 5479
DTSTAMP:20260307T003838Z
END:VEVENT
BEGIN:VEVENT
UID:69ab738e30d85
DTSTART;TZID=America/Toronto:20260311T153000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260311T163000
URL:https://uwaterloo.ca/pure-mathematics/events/waterloo-mcmaster-joint-lo
 gic-seminar
SUMMARY:Waterloo-McMaster Joint Logic Seminar
CLASS:PUBLIC
DESCRIPTION:JULES RIBOLZI\, UNIVERSITY OF WATERLOO\n\n_On Two Model-Theoret
 ic Approaches to Complex Analytic Geometry_\n\nThere is a first-order mult
 i-sorted structure for compact complex\nspaces which satisfies important m
 odel-theoretic properties\n(quantifier elimination\, elimination of imagin
 aries\, finiteness of\nMorley rank\,…). We call this theory $CCM$. On th
 e other hand\, any\ncompact complex manifold is definable in the O-minimal
  structure\n$\\mathbb{R}_{an}$. In this talk\, we will discuss the relatio
 n between\nthese two structures (and also their elementary extensions).\n\
 nMC 5417
DTSTAMP:20260307T003838Z
END:VEVENT
BEGIN:VEVENT
UID:69ab738e31773
DTSTART;TZID=America/Toronto:20250312T143000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20250312T154500
URL:https://uwaterloo.ca/pure-mathematics/events/differential-geometry-work
 ing-seminar-179
SUMMARY:Differential Geometry Working Seminar
CLASS:PUBLIC
DESCRIPTION:AMANDA PETCU\, UNIVERSITY OF WATERLOO\n\n_Some results on hyper
 symplectic structures_\n\nA conjecture of Simon Donaldson is that on a com
 pact 4-manifold X^4\none can flow from a hypersymplecticstructure to a hyp
 erkahler\nstructure while remaining in the same cohomology class. To this 
 end\nthehypersymplectic flow was introduced by Fine-Yao. In this thesis th
 e\nnotion of a positive triple on X^4 is used todefine a hypersymplectic\n
 and hyperkahler structure. Given a closed positive triple one can\ndefine 
 either a closedG2 structure or a coclosed G2 structure on T^3 x\nX^4. The 
 coclosed G2 structure is evolved under the G2Laplacian\ncoflow. This desce
 nds to a flow of the positive triple on X^4\, which\nis again the Fine-Yao
 hypersymplectic flow. In the second part of this\nthesis we let X^4 = R^4 
 \\0 with a particular cohomogeneity oneaction.\nA hypersymplectic structur
 e invariant under this action is introduced.\nThe Riemann and Ricci curvat
 uretensors are computed and we verify in a\nparticular case that this hype
 rsymplectic structure can be transformed\ntoa hyperkahler structure. The n
 otion of a soliton for the\nhypersymplectic flow in this particular case i
 s introducedand it is\nfound that steady solitons give rise to hypersymple
 ctic structures\nthat can be transformed to hyperkahlerstructures. Some ot
 her soliton\nsolutions are also discussed.\n\nMC 5403
DTSTAMP:20260307T003838Z
END:VEVENT
BEGIN:VEVENT
UID:69ab738e32138
DTSTART;TZID=America/Toronto:20260309T130000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260309T143000
URL:https://uwaterloo.ca/pure-mathematics/events/computability-learning-sem
 inar-166
SUMMARY:Computability Learning Seminar
CLASS:PUBLIC
DESCRIPTION:WILLIAM DAN\, UNIVERSITY OF WATERLOO\n\n_Random Left C.E. Reals
  and Solovay Reducibility_\n\nIn the last seminar we discussed how the hal
 ting probability of a\nuniversal prefix-free machine is left c.e. andrando
 m\, and asked if the\nconverse would hold. We then studied Solovay reducib
 ility and the\nresulting concept ofSolovay completeness\, which turns out 
 to be key in\nproving the converse. In this seminar\, we will use thisconc
 ept to\nprove the two theorems giving the converse\, a theorem from Calude
  et\nal. and the Kucera-Slamantheorem. Then\, we will go back to expand\nf
 urther on the properties of Solovay reducibility and how it\nconnectsto re
 lative randomness\, and relate this connection back to the\ntheorems we pr
 oved. This seminar follows sections9.1 and 9.2 from the\nDowney and Hirsch
 feldt book.\n\nMC 5403
DTSTAMP:20260307T003838Z
END:VEVENT
BEGIN:VEVENT
UID:69ab738e3298d
DTSTART;TZID=America/Toronto:20260312T160000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260312T172000
URL:https://uwaterloo.ca/pure-mathematics/events/analysis-seminar-215
SUMMARY:Analysis Seminar
CLASS:PUBLIC
DESCRIPTION:ELISABETH WERNER\, CASE WESTERN RESERVE UNIVERSITY\n\n_The $L_
 p$-Floating Area and Isoperimetric Inequalities on the Sphere_\n\nEuclidea
 n convex bodies in spaces of constant positive curvature. We\nintroduce th
 e family of $L_p$-floatingareas for spherical convex\nbodies\, as an analo
 g to $L_p$-affine surface area measures from\nEuclidean geometry.We invest
 igate a duality formula\, monotonicity and\nisoperimetric inequalities for
  this new family of curvaturemeasures on\nspherical convex bodies. Based o
 n joint works with Florian Besau.\n\nMC 5417
DTSTAMP:20260307T003838Z
END:VEVENT
BEGIN:VEVENT
UID:69ab738e331ce
DTSTART;TZID=America/Toronto:20260305T143000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260305T154500
URL:https://uwaterloo.ca/pure-mathematics/events/differential-geometry-work
 ing-seminar-178
SUMMARY:Differential Geometry Working Seminar
CLASS:PUBLIC
DESCRIPTION:FACUNDO CAMANO\, UNIVERSITY OF WATERLOO\n\n_Moduli Space Degene
 ration via Monopole Deformation_\n\nIn this talk\, I will discuss the theo
 ry behind the deformation of\nmonopoles. I will then apply the theory to s
 how monopole moduli spaces\ndegenerate as a singularity is sent off toward
 s infinity.\n\nMC 5403
DTSTAMP:20260307T003838Z
END:VEVENT
BEGIN:VEVENT
UID:69ab738e33a5d
DTSTART;TZID=America/Toronto:20260303T160000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260303T170000
URL:https://uwaterloo.ca/pure-mathematics/events/model-theory-working-semin
 ar-38
SUMMARY:Model Theory Working Seminar
CLASS:PUBLIC
DESCRIPTION:RAHIM MOOSA\, UNIVERSITY OF WATERLOO\n\n_Definable groups in CC
 M_\n\nI will continue the compactification argument for complex manifolds\
 nthat are compactifiable outside one point.\n\nMC 5479
DTSTAMP:20260307T003838Z
END:VEVENT
BEGIN:VEVENT
UID:69ab738e3438c
DTSTART;TZID=America/Toronto:20260303T100000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260303T110000
URL:https://uwaterloo.ca/pure-mathematics/events/number-theory-seminar-164
SUMMARY:Number Theory Seminar
CLASS:PUBLIC
DESCRIPTION:MATHILDE GERBELLI-GAUTHIER\, UNIVERSITY OF TORONTO\n\n_Equidist
 ribution of Root Numbers_\n\nThe root number of an L-function captures imp
 ortant arithmetic\ninformation\, such as\, conjecturally\, the parity of t
 he rank in the\ncase of elliptic curves. As such\, statistics of root numb
 ers can tell\nus about the typical behavior of arithmetic objects. In join
 t work\nwith Rahul Dalal\, we prove an equidistribution result for root nu
 mbers\nof self-dual automorphic representations of GL_N as the weight vari
 es.\nThis is done in the framework of endoscopy and the stable trace\nform
 ula.\n\nMC 5479
DTSTAMP:20260307T003838Z
END:VEVENT
BEGIN:VEVENT
UID:69ab738e34c4e
DTSTART;TZID=America/Toronto:20260302T130000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260302T143000
URL:https://uwaterloo.ca/pure-mathematics/events/pure-math-grad-colloquium-
 20
SUMMARY:Pure math Grad colloquium
CLASS:PUBLIC
DESCRIPTION:XIAO ZHONG\, UNIVERSITY OF WATERLOO\n\n_Bounds on the Greatest 
 Common Divisors and a Dynamical Analogy_\n\nIn this talk\, I will discuss 
 a dynamical analogue of a classical\nnumber-theoretic question concerning 
 bounds on the greatest common\ndivisors of two integer sequences. I will p
 resent some recent progress\non this problem and highlight several open di
 rections for future\nresearch. Finally\, I will explain how this question 
 relates to the\nDynamical Mordell–Lang Conjecture\, a central topic in a
 lgebraic and\narithmetic dynamics.\n\nMC 5501\n\n(with snacks afterward)
DTSTAMP:20260307T003838Z
END:VEVENT
BEGIN:VEVENT
UID:69ab738e3550a
DTSTART;TZID=America/Toronto:20260227T170000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20260227T180000
URL:https://uwaterloo.ca/pure-mathematics/events/pure-math-grad-colloquium-
 19
SUMMARY:Pure math Grad colloquium
CLASS:PUBLIC
DESCRIPTION:_Open Mic_\n\nCome listen to or contribute a minitalk (no longe
 r than 15 minutes).\nAnything (as long as it vaguely relates tomathematics
  and is\nreasonably accessible) goes!\n\nMC 5479\n\n(Refreshments will sta
 rt at 16:30)
DTSTAMP:20260307T003838Z
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