BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Jenia Tevelev (UMass-PUC)
DTSTART:20200414T170000Z
DTEND:20200414T180000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/1
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/1/">Gushel-Mukai varieties</a>\nby Jenia Tevelev (UMass-PUC) as par
 t of Seminario de Geometría Algebraica\n\n\nAbstract\nA survey talk about
  Fano varieties of coindex 2 and 3\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sergio Troncoso (PUC)
DTSTART:20200421T170000Z
DTEND:20200421T180000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/2
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/2/">Un 3-fold de Calabi-Yau con grupo fundamental no-abeliano (en e
 spañol)</a>\nby Sergio Troncoso (PUC) as part of Seminario de Geometría 
 Algebraica\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Pedro Montero (UTFSM)
DTSTART:20200407T170000Z
DTEND:20200407T180000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/3
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/3/">Resultados sobre variedades de Fano de coíndice 3</a>\nby Pedr
 o Montero (UTFSM) as part of Seminario de Geometría Algebraica\n\nAbstrac
 t: TBA\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Pedro Montero (UTFSM)
DTSTART:20200331T160000Z
DTEND:20200331T170000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/4
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/4/">¿Cómo clasificar variedades de Fano?  </a>\nby Pedro Montero 
 (UTFSM) as part of Seminario de Geometría Algebraica\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ignacio Barros Reyes (Northeastern)
DTSTART:20200428T170000Z
DTEND:20200428T180000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/5
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/5/">Special cubic fourfolds (en español)</a>\nby Ignacio Barros Re
 yes (Northeastern) as part of Seminario de Geometría Algebraica\n\n\nAbst
 ract\nEn esta charla discutiremos la elegante y profunda relación entre h
 ipersuperficies cúbicas y superficies K3 desarrollada por Hassett.\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sebastian Torres (UMass)
DTSTART:20200505T170000Z
DTEND:20200505T180000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/6
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/6/">Bott desaparición via GIT y cuantización (en español)</a>\nb
 y Sebastian Torres (UMass) as part of Seminario de Geometría Algebraica\n
 \n\nAbstract\nDecimos que una variedad proyectiva suave $Y$ satisface Bott
  desaparición si\n$H^i(Y\,\\Omega^j\\otimes L)=0$ para todo $i>0\,j\\geq0
 $ y $L$ amplio. Hay\npocos ejemplos no tóricos conocidos que satisfagan e
 sta propiedad (y\nresulta ser especialmente restrictiva para variedades de
  Fano). En la\ncharla mostraremos una nueva familia de variedades que sati
 sfacen Bott\ndesaparición\, obtenidas como cuocientes GIT de $(\\mathbb{P
 }^1)^n$. El\ningrediente principal es el teorema de cuantización de Halpe
 rn-Leistner.\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/6/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Antonio Laface (Universidad de Concepción)
DTSTART:20200512T170000Z
DTEND:20200512T180000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/7
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/7/">Cox rings and blowing-ups (in English)</a>\nby Antonio Laface (
 Universidad de Concepción) as part of Seminario de Geometría Algebraica\
 n\n\nAbstract\nCox rings are a generalization of homogeneous coordinate ri
 ngs which are polynomial rings exactly for toric varieties. Their finite g
 eneration has been characterized in geometric terms by Hu and Keel and it 
 implies two conditions: 1) any nef class is semiample\; 2) the effective c
 one is polyhedral.\n\nA natural problem is the finite generation of the Co
 x ring of the blowing-up of a toric variety at a point. This is related to
  other open problems like e.g. the Nagata conjecture. Examples of such non
 -finitely generated Cox rings have been given by several authors by constr
 ucting a nef class which is not semiample.\n\nIn this talk\, after reviewi
 ng recents results\, I will focus on examples of blowing-ups of toric surf
 aces at a point admitting a non-polyhedral effective cone\, answering a qu
 estion of Tevelev.\n\nThis is joint work in progress with Luca Ugaglia.\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:José Ignacio Yáñez (University of Utah)
DTSTART:20200519T170000Z
DTEND:20200519T180000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/8
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/8/">Dimensión númerica de divisores (en español)</a>\nby José I
 gnacio Yáñez (University of Utah) as part of Seminario de Geometría Alg
 ebraica\n\n\nAbstract\nUn invariante importante en el estudio de la geomet
 ría de un divisor es su dimensión de Iitaka. Ésta mide el crecimiento a
 sintótico del espacio de secciones de los múltiplos del divisor. Sin emb
 argo\, la dimensión de Iitaka no se comporta bien en relación a la clase
  numérica del divisor\, por lo que se han dado diversas definiciones que 
 buscan capturar facetas de esta dimensión y que no dependan de la clase n
 umérica.\n\nEn esta charla presentaré algunas definiciones de dimensión
  numérica de un divisor\, junto con un ejemplo que evidencia problemas co
 n estas definiciones y preguntas que surgen a partir de esto.\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Yulieth Prieto (Università di Bologna)
DTSTART:20200526T170000Z
DTEND:20200526T180000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/9
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/9/">Automorfismos simplécticos en superficies K3 (en español)</a>
 \nby Yulieth Prieto (Università di Bologna) as part of Seminario de Geome
 tría Algebraica\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Alexander Kuznetsov (Steklov Mathematical Institute)
DTSTART:20200609T170000Z
DTEND:20200609T180000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/10
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/10/">Gushel-Mukai varieties (en inglés)</a>\nby Alexander Kuznetso
 v (Steklov Mathematical Institute) as part of Seminario de Geometría Alge
 braica\n\n\nAbstract\nIn the talk I will review the theory of Gushel-Mukai
  varieties\, Fano varieties of Picard number 1\, coindex 3\, and degree 10
 \, concentrating on their derived categories\, Hodge structures\, and peri
 od maps.\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/10/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Roberto Villaflor (IMPA)
DTSTART:20200616T170000Z
DTEND:20200616T180000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/11
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/11/">How to construct Hodge cycles on hypersurfaces? (en español)<
 /a>\nby Roberto Villaflor (IMPA) as part of Seminario de Geometría Algebr
 aica\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/11/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jenia Tevelev (UMass & PUC)
DTSTART:20200623T170000Z
DTEND:20200623T180000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/12
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/12/">Beauty and the Beast (en inglés)</a>\nby Jenia Tevelev (UMass
  & PUC) as part of Seminario de Geometría Algebraica\n\n\nAbstract\nThe m
 oduli space of stable rational curves behaves nicely in the beginning (poi
 nt\, projective line\, quintic del Pezzo surface\, minimal resolution of t
 he Segre cubic threefold) but then quickly gets out of hand. Some folks ha
 ve wondered if its cone of pseudoeffective divisors is infinitely generate
 d. In a joint work with Ana-Maria Castravet\, Antonio Laface and Luca Ugag
 lia\, we tame the beast.\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/12/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Arnaud Beauville (Université de Nice)
DTSTART:20200630T150000Z
DTEND:20200630T160000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/13
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/13/">Holomorphic symplectic manifolds</a>\nby Arnaud Beauville (Uni
 versité de Nice) as part of Seminario de Geometría Algebraica\n\n\nAbstr
 act\nA survey of the basic theory of holomorphic symplectic manifolds\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/13/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Angel David Ríos (Universidad de Roma "La sapienza")
DTSTART:20200707T170000Z
DTEND:20200707T180000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/14
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/14/">Polinomio de Riemann-Roch para variedades Hyperkahler (en espa
 ñol)</a>\nby Angel David Ríos (Universidad de Roma "La sapienza") as par
 t of Seminario de Geometría Algebraica\n\n\nAbstract\nDespués de una bre
 ve introducción a las variedades Hyperkahler\, hablaré sobre el polinomi
 o de Riemann-Roch\, un invariante por deformación que calcula la caracter
 ística de Euler de fibrados lineales . Finalizaré con un resultado recie
 nte donde se exponen fórmulas explícitas para este polinomio en los ejem
 plos conocidos.\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/14/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Igor Dolgachev (University of Michigan)
DTSTART:20200714T170000Z
DTEND:20200714T180000Z
DTSTAMP:20260404T100013Z
UID:AG_Santiago/15
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/AG_Sa
 ntiago/15/">Crystallographic bases in the Picard group of algebraic surfac
 es (en inglés)</a>\nby Igor Dolgachev (University of Michigan) as part of
  Seminario de Geometría Algebraica\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/AG_Santiago/15/
END:VEVENT
END:VCALENDAR