BEGIN:VCALENDAR
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CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:no seminar today
DTSTART:20240213T160000Z
DTEND:20240213T170000Z
DTSTAMP:20260412T170811Z
UID:voganish/1
DESCRIPTION:by no seminar today as part of Canadian Rockies Representation
  Theory\n\nLecture held in Zoom and MS337.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/voganish/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sarah Dijols (University of British Columbia)
DTSTART:20240206T160000Z
DTEND:20240206T170000Z
DTSTAMP:20260412T170811Z
UID:voganish/2
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/2/"
 >Why discrete and tempered Langlands parameters are open</a>\nby Sarah Dij
 ols (University of British Columbia) as part of Canadian Rockies Represent
 ation Theory\n\nLecture held in Zoom and MS337.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/voganish/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mishty Ray (University of Calgary)
DTSTART:20240220T170000Z
DTEND:20240220T180000Z
DTSTAMP:20260412T170811Z
UID:voganish/3
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/3/"
 >Functoriality of ABV-packets</a>\nby Mishty Ray (University of Calgary) a
 s part of Canadian Rockies Representation Theory\n\nLecture held in Zoom a
 nd MS337.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/voganish/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:José Cruz (University of Calgary)
DTSTART:20240227T160000Z
DTEND:20240227T170000Z
DTSTAMP:20260412T170811Z
UID:voganish/4
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/4/"
 >Playing around with the function sheaf dictionary and the Fourier Transfo
 rm</a>\nby José Cruz (University of Calgary) as part of Canadian Rockies 
 Representation Theory\n\nLecture held in Zoom and MS337.\n\nAbstract\nIn t
 his talk I will first introduce Grothendieck’s function sheaf dictionary
  and show you\nhow we can use it to understand perverse sheaves. Then\, we
  will use the dictionary to\nsee how the Fourier transform functor acts on
  some examples on the geometric side of\nVogan’s persepective of the loc
 al Langlands correspondence.\n
LOCATION:https://researchseminars.org/talk/voganish/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Monica Nevins (University of Ottawa)
DTSTART:20240305T160000Z
DTEND:20240305T170000Z
DTSTAMP:20260412T170811Z
UID:voganish/5
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/5/"
 >Representations of SL(2) near the identity</a>\nby Monica Nevins (Univers
 ity of Ottawa) as part of Canadian Rockies Representation Theory\n\nLectur
 e held in Zoom and MS337.\n\nAbstract\nThe character of an admissible repr
 esentation $\\pi$ of a $p$-adic group $G$ can be expressed\, in a neighbou
 rhood of the identity\, as a linear combination of functions arising from 
 the finitely many nilpotent orbits. In this talk\, we propose an interpret
 ation of the local character expansion as branching rules of the restricti
 on of $\\pi$ to a compact open subgroup and illustrate this explicitly wit
 h the example of $\\mathrm{SL}(2).$\n
LOCATION:https://researchseminars.org/talk/voganish/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Geoff Vooys - Deferred (Mount Allison University)
DTSTART:20240319T150000Z
DTEND:20240319T160000Z
DTSTAMP:20260412T170811Z
UID:voganish/6
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/6/"
 >Equivariant Beilinson's Theorem and Extensions of Equivariant Perverse Sh
 eaves</a>\nby Geoff Vooys - Deferred (Mount Allison University) as part of
  Canadian Rockies Representation Theory\n\nLecture held in Zoom and MS337.
 \n\nAbstract\nBeilinson's Theorem is an important theorem in algebraic geo
 metry that says there is a triangulated equivalence of categories $D^bc(X\
 ;\\overline{\\mathbb{Q}}{\\ell}) \\simeq D^b(\\mathbf{Perv}(X\;\\overline{
 \\mathbb{\\Q}}{\\ell}))$ fixing the category of perverse sheaves for any v
 ariety $X$ over an algebraically closed field $K$ with $\\ell$ a positive 
 integer prime distinct from the characteristic of $K$. While a result of f
 undamental importance\, as it allows the computation of extensions between
  perverse sheaves in the derived category on $X$ to be performed in their 
 own bounded derived category\, the equivariant version of this result has 
 been elusive and known in general only for complex varieties with actions 
 by finite complex algebraic groups. In this talk I'll discuss a general pr
 oof for an equivariant version of Beilinson's Theorem\, i.e.\,a triangulat
 ed equivalence  $D^b_G(X\;\\overline{\\mathbb{Q}}{\\ell}) \\simeq D^bG(\\m
 athbf{Perv}(X\;\\overline{\\mathbb{Q}}{\\ell}))$ which fixes the category 
 of equivariant perverse sheaves valid for any variety equipped with an act
 ion by a smooth algebraic group $G$ over a field $K$. Afterwards I'll give
  a short discussion as well about what this means for equivariant extensio
 ns between equivariant perverse sheaves.\n
LOCATION:https://researchseminars.org/talk/voganish/6/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Chi-Heng Lo (Purdue)
DTSTART:20240312T150000Z
DTEND:20240312T160000Z
DTSTAMP:20260412T170811Z
UID:voganish/7
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/7/"
 >An upper bound for wavefront sets of admissible representations of p-adic
  groups</a>\nby Chi-Heng Lo (Purdue) as part of Canadian Rockies Represent
 ation Theory\n\nLecture held in Zoom and MS337.\n\nAbstract\nThe Vogan con
 jecture states that local Arthur packets match ABV-packets for L-parameter
 s of Arthur type. Thus\, it is expected that the properties of local Arthu
 r packets should hold for the corresponding ABV-packets\, and vice versa. 
 In the first part of this talk\, I will recall some basic properties of th
 ese packets\, and state the closure ordering conjecture on local Arthur pa
 cekts and Aubert-Zelevinsky dual conjecture on ABV-packets. In the second 
 part\, I will introduce a new conjecture on upper bounds of wavefront set\
 , Jiang's conjecture on wavefront set for local Arthur packets and for ABV
 -packets. I will show that these three conjectures are all equivalent assu
 ming the two conjectures in the first part hold\, and reduce these conject
 ures to the anti-discrete case. This is a joint work with Alexander Hazelt
 ine\, Baiying Liu and Freydoon Shahidi.\n
LOCATION:https://researchseminars.org/talk/voganish/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Geoff Vooys (Mount Allison University)
DTSTART:20240326T150000Z
DTEND:20240326T160000Z
DTSTAMP:20260412T170811Z
UID:voganish/8
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/8/"
 >Equivariant Beilinson's Theorem and Extensions of Equivariant Perverse Sh
 eaves</a>\nby Geoff Vooys (Mount Allison University) as part of Canadian R
 ockies Representation Theory\n\nLecture held in Zoom and MS337.\n\nAbstrac
 t\nBeilinson's Theorem is an important theorem in algebraic geometry that 
 says there is a triangulated equivalence of categories $D^bc(X\;\\overline
 {\\mathbb{Q}}{\\ell}) \\simeq D^b(\\mathbf{Perv}(X\;\\overline{\\mathbb{\\
 Q}}{\\ell}))$ fixing the category of perverse sheaves for any variety $X$ 
 over an algebraically closed field $K$ with $\\ell$ a positive integer pri
 me distinct from the characteristic of $K$. While a result of fundamental 
 importance\, as it allows the computation of extensions between perverse s
 heaves in the derived category on $X$ to be performed in their own bounded
  derived category\, the equivariant version of this result has been elusiv
 e and known in general only for complex varieties with actions by finite c
 omplex algebraic groups. In this talk I'll discuss a general proof for an 
 equivariant version of Beilinson's Theorem\, i.e.\,a triangulated equivale
 nce  $D^b_G(X\;\\overline{\\mathbb{Q}}{\\ell}) \\simeq D^bG(\\mathbf{Perv}
 (X\;\\overline{\\mathbb{Q}}{\\ell}))$ which fixes the category of equivari
 ant perverse sheaves valid for any variety equipped with an action by a sm
 ooth algebraic group $G$ over a field $K$. Afterwards I'll give a short di
 scussion as well about what this means for equivariant extensions between 
 equivariant perverse sheaves.\n\nI'll try to keep the category theory in t
 his talk to as gentle a level as possible and at as understandable a level
  as possible as well\, so please ask questions as we go!\n
LOCATION:https://researchseminars.org/talk/voganish/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Leticia Barchini - Postponed (Oklahoma State University)
DTSTART:20240429T150000Z
DTEND:20240429T160000Z
DTSTAMP:20260412T170811Z
UID:voganish/9
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/9/"
 >Relations between Kazhdan-Lusztig polynomials for real and p-adic groups<
 /a>\nby Leticia Barchini - Postponed (Oklahoma State University) as part o
 f Canadian Rockies Representation Theory\n\nLecture held in Zoom and MS337
 .\n\nAbstract\nWe relate certain Kazhdan-Lusztig polynomials that arise in
  the representation\ntheory of real and $p$-adic groups. The polynomials e
 ncode the multiplicity of irreducible\nrepresentations in standard ones. I
 n both\, the real and p-adic setting\, there are relevant\ngeometric param
 eters that index both irreducible and standard modules. I will briefly\nre
 view the geometric setting. Next\, I will discuss earlier contributions by
  Zelevinski and\nby Ciubotaru-Trapa. In presenting new results\, I will em
 phasize examples. I will explain\nhow\, under assumptions\, these results 
 imply that the decomposition matrix for a class of\nunipotent representati
 on of split $p$-adic groups is a submatrix of the decomposition matrix\nof
  representations of split real groups.\n
LOCATION:https://researchseminars.org/talk/voganish/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Elad Zelingher (University of Michigan)
DTSTART:20240507T150000Z
DTEND:20240507T160000Z
DTSTAMP:20260412T170811Z
UID:voganish/10
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/10/
 ">Kloosterman sums in representation theory of $GL(n\, \\mathbb{F}_q)$.</a
 >\nby Elad Zelingher (University of Michigan) as part of Canadian Rockies 
 Representation Theory\n\nLecture held in Zoom and MS337.\n\nAbstract\nGive
 n a "nice" irreducible representation of $GL(n\, \\mathbb{F}_q)$\, one can
  define a special matrix coefficient attached to it\, called the Bessel fu
 nction. Often Kloosterman sums show up as special values of these Bessel f
 unctions. In this talk\, I will first explain my previous results regardin
 g special values of Bessel functions of generic representations. I will th
 en talk about my joint work with Oded Carmon regarding special values of B
 essel functions associated to Speh representations and their relation to m
 atrix Kloosterman sums.\n
LOCATION:https://researchseminars.org/talk/voganish/10/
END:VEVENT
BEGIN:VEVENT
SUMMARY:No seminar
DTSTART:20240430T150000Z
DTEND:20240430T160000Z
DTSTAMP:20260412T170811Z
UID:voganish/11
DESCRIPTION:by No seminar as part of Canadian Rockies Representation Theor
 y\n\nLecture held in Zoom and MS337.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/voganish/11/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mathilde Gerbelli-Gauthier (McGill University)
DTSTART:20240423T150000Z
DTEND:20240423T160000Z
DTSTAMP:20260412T170811Z
UID:voganish/12
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/12/
 ">Counting non-tempered automorphic forms using endoscopy</a>\nby Mathilde
  Gerbelli-Gauthier (McGill University) as part of Canadian Rockies Represe
 ntation Theory\n\nLecture held in Zoom and MS337.\n\nAbstract\nHow many au
 tomorphic representations of level n have a specified local factor at the 
 infinite places? When this local factor is a discrete series representatio
 n\, this question is asymptotically well-undersertood as n grows. Non-temp
 ered local factors\, on the other hand\, violate the Ramanujan conjecture 
 and should be very rare. We use the endoscopic classification for represen
 tations to quantify this rarity in the case of cohomological representatio
 ns of unitary groups\, and discuss some applications to the growth of coho
 mology of Shimura varieties\n
LOCATION:https://researchseminars.org/talk/voganish/12/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Leticia Barchini (Oklahoma State University)
DTSTART:20240514T150000Z
DTEND:20240514T160000Z
DTSTAMP:20260412T170811Z
UID:voganish/13
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/13/
 ">Relations between Kazhdan-Lusztig polynomials for real and p-adic groups
 </a>\nby Leticia Barchini (Oklahoma State University) as part of Canadian 
 Rockies Representation Theory\n\nLecture held in Zoom and MS337.\n\nAbstra
 ct\nWe relate certain Kazhdan-Lusztig polynomials that arise in the repres
 entation\ntheory of real and $p$-adic groups. The polynomials encode the m
 ultiplicity of irreducible\nrepresentations in standard ones. In both\, th
 e real and p-adic setting\, there are relevant\ngeometric parameters that 
 index both irreducible and standard modules. I will briefly\nreview the ge
 ometric setting. Next\, I will discuss earlier contributions by Zelevinski
  and\nby Ciubotaru-Trapa. In presenting new results\, I will emphasize exa
 mples. I will explain\nhow\, under assumptions\, these results imply that 
 the decomposition matrix for a class of\nunipotent representation of split
  $p$-adic groups is a submatrix of the decomposition matrix\nof representa
 tions of split real groups.\n
LOCATION:https://researchseminars.org/talk/voganish/13/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Peter Dillery (University of Maryland)
DTSTART:20250414T190000Z
DTEND:20250414T203000Z
DTSTAMP:20260412T170811Z
UID:voganish/14
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/14/
 ">New versions of the refined local Langlands correspondence</a>\nby Peter
  Dillery (University of Maryland) as part of Canadian Rockies Representati
 on Theory\n\nLecture held in Zoom and Clifton's office.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/voganish/14/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Chi-Heng Lo (Purdue University)
DTSTART:20250428T190000Z
DTEND:20250428T203000Z
DTSTAMP:20260412T170811Z
UID:voganish/15
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/15/
 ">Desiderata and Uniqueness of the Local Langlands Correspondence</a>\nby 
 Chi-Heng Lo (Purdue University) as part of Canadian Rockies Representation
  Theory\n\nLecture held in Zoom and Clifton's office.\n\nAbstract\nThe loc
 al Langlands conjecture predicts a "canonical" bijection between the set o
 f smooth irreducible representations of a p-adic reductive algebraic group
  G and the set of enhanced L-parameter of G\, known as the local Langlands
  correspondence (LLC). There are several constructions of LLC\, either on 
 specific types of groups or on special classes of representations. The com
 parison between different constructions of LLC is a non-trivial problem. I
 n this talk\, I will introduce a list of desiderata of LLC for general qua
 si-split p-adic group G. Then\, I will show that when p is sufficiently la
 rge\, the LLC that satisfies these desiderata is unique (if it exists). Th
 is is a joint work with Tasho Kaletha and Cheng-Chiang Tsai.\n
LOCATION:https://researchseminars.org/talk/voganish/15/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Lucas Mason-Brown (UT Austin)
DTSTART:20250512T190000Z
DTEND:20250512T203000Z
DTSTAMP:20260412T170811Z
UID:voganish/16
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/16/
 ">Unitary Representations and the Langlands Classification</a>\nby Lucas M
 ason-Brown (UT Austin) as part of Canadian Rockies Representation Theory\n
 \nLecture held in Zoom and Clifton's office.\n\nAbstract\nLet $G(k)$ be th
 e $k$-points of a connected reductive algebraic group defined over a local
  field $k$. A fundamental unsolved problem in representation theory and ha
 rmonic analysis is to classify the set of irreducible unitary representati
 ons of $G(k)$. The Langlands classification provides a (partly conjectural
 ) description of the much larger set of irreducible admissible representat
 ions of $G(k)$ in terms of sheaves on a space of Langlands parameters. But
  what does this classification tell us about unitary representations? In t
 his talk\, I will explain what is known in general about the answer to thi
 s question.\n
LOCATION:https://researchseminars.org/talk/voganish/16/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sarah Meier (Bielefeld University)
DTSTART:20250526T190000Z
DTEND:20250526T203000Z
DTSTAMP:20260412T170811Z
UID:voganish/17
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/17/
 ">Emerton’s Functor of Ordinary Parts</a>\nby Sarah Meier (Bielefeld Uni
 versity) as part of Canadian Rockies Representation Theory\n\nLecture held
  in Zoom and Clifton's office.\n\nAbstract\nEmerton's Ordinary Parts funct
 or $Ord$ plays an important role in the theory of mod $p$ representations 
 of $p$-adic reductive groups.\nThe right derived functors of $Ord$ are con
 jectured by Emerton to be given in terms of group cohomology.\nIn this tal
 k I will discuss a proof of a variant of this conjecture. A key step in th
 is proof is a comparison between certain compact and parabolic inductions 
 which I will explain for an example. \nThis is based on joint work with Ma
 nuel Hoff and Michael Spieß.\n
LOCATION:https://researchseminars.org/talk/voganish/17/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Leticia Barchini (Oklahoma State University)
DTSTART:20250630T190000Z
DTEND:20250630T203000Z
DTSTAMP:20260412T170811Z
UID:voganish/19
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/19/
 ">Microlocal packets for G_2</a>\nby Leticia Barchini (Oklahoma State Univ
 ersity) as part of Canadian Rockies Representation Theory\n\nLecture held 
 in Zoom and MS-337.\n\nAbstract\nThe first half of the talk will focus on 
 the [ABV] microlocal packets for G2(R) when\nthe infinitesimal character i
 s either regular dominant or [1\, 0]. I will give a brief review of\ndefin
 itions and techniques used to explicitly find those packets.\nIn the secon
 d half of the talk I will relate our computations to the work of others. I
 n\nparticular\, I will compare the G2(R) microlocal packets at [1\, 0] to 
 the Arthur packets of\nCunningham-Fiori-Zhang. I will also relate our work
  to computations done by Andr´as\nLorincz.\n
LOCATION:https://researchseminars.org/talk/voganish/19/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Kristaps Balodis
DTSTART:20250714T190000Z
DTEND:20250714T203000Z
DTSTAMP:20260412T170811Z
UID:voganish/20
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/voganish/20/
 ">The p-adic Kazhdan-Lusztig hypothesis\, generic representations\, and or
 bits of smooth closure</a>\nby Kristaps Balodis as part of Canadian Rockie
 s Representation Theory\n\nLecture held in Zoom and MS-337.\n\nAbstract\nB
 uilding on the work of Zelevisnky and the cases for real and complex group
 s\, Davis Vogan purposed a p-adic Kazhdan-Lusztig hypothesis: The dimensio
 ns of stalks of perverse sheaves on certain varieties of Langlands paramet
 ers\, should coincide with multiplicities of irreducible representations o
 f in "standard" representations.  Moreover\, Vogan defined what we call AB
 V-packets in terms of the microlocal geometry of the varieties of Langland
 s parameters\, and purposed that these coincide with Arthur's A-packets.\n
 \nWe will discuss recent work which\, under the assumption of the p-KLH\, 
 proves (various cases of) a conjecture of Gross-Prasad that an L-packet co
 ntains a generic representation if and only if the associated adjoint L-fu
 nction is regular at s=1.  We will also explore implications for Shahidi's
  enhanced genericity conjecture\, an analogue for ABV-packets\, and the ro
 le of orbits with smooth closure.\n
LOCATION:https://researchseminars.org/talk/voganish/20/
END:VEVENT
END:VCALENDAR