BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Veronique Bazier-Matte (UConn) DTSTART:20200923T150000Z DTEND:20200923T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/1 DESCRIPTION:Title: Combinatorics Of Cluster Algebras\nby Veronique Bazier-Mat te (UConn) as part of UConn Algebra Seminar\n\nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/1/ END:VEVENT BEGIN:VEVENT SUMMARY:Richard Gottesman (Queen's University) DTSTART:20200930T150000Z DTEND:20200930T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/2 DESCRIPTION:Title: Vector-valued modular forms\nby Richard Gottesman (Queen's University) as part of UConn Algebra Seminar\n\nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/2/ END:VEVENT BEGIN:VEVENT SUMMARY:Hanson Smith (UConn) DTSTART:20201007T150000Z DTEND:20201007T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/3 DESCRIPTION:Title: The Monogeneity Of Division Fields Of Abelian Varieties\nb y Hanson Smith (UConn) as part of UConn Algebra Seminar\n\nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/3/ END:VEVENT BEGIN:VEVENT SUMMARY:Ozgur Esentepe (UConn) DTSTART:20201014T150000Z DTEND:20201014T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/4 DESCRIPTION:Title: Dimensions of singularity categories for trivial extension ord ers in 5 acts\nby Ozgur Esentepe (UConn) as part of UConn Algebra Semi nar\n\nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/4/ END:VEVENT BEGIN:VEVENT SUMMARY:Abbey Bourbon (Wake Forest) DTSTART:20201021T150000Z DTEND:20201021T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/5 DESCRIPTION:Title: On Isolated Points of Odd Degree\nby Abbey Bourbon (Wake F orest) as part of UConn Algebra Seminar\n\nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/5/ END:VEVENT BEGIN:VEVENT SUMMARY:Kyu-Hwan Lee (UConn) DTSTART:20201028T150000Z DTEND:20201028T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/6 DESCRIPTION:Title: Sato--Tate distributions and identities of symplectic characte rs\nby Kyu-Hwan Lee (UConn) as part of UConn Algebra Seminar\n\nAbstra ct: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/6/ END:VEVENT BEGIN:VEVENT SUMMARY:Anne Dranowski (Institute for Advanced Study) DTSTART:20201104T160000Z DTEND:20201104T171500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/7 DESCRIPTION:Title: The glass bead game and Lusztig's dual semicanonical basis \nby Anne Dranowski (Institute for Advanced Study) as part of UConn Algebr a Seminar\n\nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/7/ END:VEVENT BEGIN:VEVENT SUMMARY:Benjamin Briggs (University of Utah) DTSTART:20201111T160000Z DTEND:20201111T171500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/8 DESCRIPTION:Title: The Hochschild cohomology of twisted tensor products\nby B enjamin Briggs (University of Utah) as part of UConn Algebra Seminar\n\nAb stract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/8/ END:VEVENT BEGIN:VEVENT SUMMARY:Tom Roby (UConn) DTSTART:20201118T160000Z DTEND:20201118T171500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/9 DESCRIPTION:Title: Dynamical algebraic combinatorics & homomesy in higher realms< /a>\nby Tom Roby (UConn) as part of UConn Algebra Seminar\n\nAbstract: TBA \n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/9/ END:VEVENT BEGIN:VEVENT SUMMARY:Yoon-Joo Kim (Stony Brook University) DTSTART:20210203T160000Z DTEND:20210203T171500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/10 DESCRIPTION:Title: The cohomology structure of compact hyper-Kähler manifolds\nby Yoon-Joo Kim (Stony Brook University) as part of UConn Algebra Semi nar\n\nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/10/ END:VEVENT BEGIN:VEVENT SUMMARY:Filip Najman (University of Zagreb) DTSTART:20210210T160000Z DTEND:20210210T171500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/11 DESCRIPTION:Title: Q-curves over odd degree number fields\nby Filip Najman ( University of Zagreb) as part of UConn Algebra Seminar\n\nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/11/ END:VEVENT BEGIN:VEVENT SUMMARY:Jeremy Rouse (Wake Forest) DTSTART:20210224T160000Z DTEND:20210224T171500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/12 DESCRIPTION:Title: How often is the order odd modulo a prime?\nby Jeremy Rou se (Wake Forest) as part of UConn Algebra Seminar\n\nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/12/ END:VEVENT BEGIN:VEVENT SUMMARY:Sarah Mayes-Tang (University of Toronto) DTSTART:20210303T160000Z DTEND:20210303T171500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/13 DESCRIPTION:Title: Resolutions of powers of ideals\nby Sarah Mayes-Tang (Uni versity of Toronto) as part of UConn Algebra Seminar\n\nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/13/ END:VEVENT BEGIN:VEVENT SUMMARY:Darij Grinberg (Drexel University) DTSTART:20210310T160000Z DTEND:20210310T171500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/14 DESCRIPTION:Title: Some simplicial complexes in combinatorics\nby Darij Grin berg (Drexel University) as part of UConn Algebra Seminar\n\nAbstract: TBA \n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/14/ END:VEVENT BEGIN:VEVENT SUMMARY:Robert Walker (UWisconsin- Madison) DTSTART:20210317T150000Z DTEND:20210317T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/15 DESCRIPTION:Title: Uniform Asymptotic Growth of Symbolic Powers of Ideals\nb y Robert Walker (UWisconsin- Madison) as part of UConn Algebra Seminar\n\ nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/15/ END:VEVENT BEGIN:VEVENT SUMMARY:Swaraj Pande (University of Michigan) DTSTART:20210324T150000Z DTEND:20210324T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/16 DESCRIPTION:Title: Multiplicities of Jumping Numbers\nby Swaraj Pande (Unive rsity of Michigan) as part of UConn Algebra Seminar\n\nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/16/ END:VEVENT BEGIN:VEVENT SUMMARY:Devlin Mallory (University of Michigan) DTSTART:20210331T150000Z DTEND:20210331T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/17 DESCRIPTION:Title: Differential operators on singular rings and the global geome try of projective varieties\nby Devlin Mallory (University of Michigan ) as part of UConn Algebra Seminar\n\nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/17/ END:VEVENT BEGIN:VEVENT SUMMARY:Bradley Dirks (University of Michigan) DTSTART:20210407T150000Z DTEND:20210407T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/18 DESCRIPTION:Title: Minimal exponents and a conjecture of Teissier\nby Bradle y Dirks (University of Michigan) as part of UConn Algebra Seminar\n\nAbstr act: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/18/ END:VEVENT BEGIN:VEVENT SUMMARY:Özlem Ejder (Boğaziçi University) DTSTART:20210421T150000Z DTEND:20210421T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/19 DESCRIPTION:Title: Galois Theory of Rational Maps\nby Özlem Ejder (Boğazi çi University) as part of UConn Algebra Seminar\n\nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/19/ END:VEVENT BEGIN:VEVENT SUMMARY:Selvi Kara (University of South Alabama) DTSTART:20210423T174500Z DTEND:20210423T190000Z DTSTAMP:20260424T141902Z UID:uconnalgebra/20 DESCRIPTION:Title: Multi-Rees Algebras Of Strongly Stable Ideals\nby Selvi K ara (University of South Alabama) as part of UConn Algebra Seminar\n\nAbst ract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/20/ END:VEVENT BEGIN:VEVENT SUMMARY:Jennifer Li (UMass Amherst) DTSTART:20210428T150000Z DTEND:20210428T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/21 DESCRIPTION:Title: A cone conjecture for log Calabi-Yau surfaces\nby Jennife r Li (UMass Amherst) as part of UConn Algebra Seminar\n\nAbstract: TBA\n LOCATION:https://master.researchseminars.org/talk/uconnalgebra/21/ END:VEVENT BEGIN:VEVENT SUMMARY:Francesco Bastianelli (Università degli Studi di Bari Aldo Moro) DTSTART:20240306T160000Z DTEND:20240306T171500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/22 DESCRIPTION:Title: Moving curves of least gonality on symmetric products of curv es\nby Francesco Bastianelli (Università degli Studi di Bari Aldo Mor o) as part of UConn Algebra Seminar\n\n\nAbstract\nGiven an irreducible pr ojective variety \$X\$\, the covering gonality of \$X\$ is the least g onality of an irreducible curve \$E\$ contained in \$X\$ and passing t hrough a general point of \$X\$.\nIn recent years\, this birational inva riant has been studied for various algebraic varieties\, as e.g. hypersurf aces of the projective space and abelian varieties.\nIn this talk we will report on a joint work with Nicola Picoco\, and we will be concerned with the covering gonality of the \$k\$-fold symmetric product \$C_k\$ of a smooth complex projective curve \$C\$ of genus \$g>k\$.\nIn particula r\, we will show that for \$k=2\,3\,4\$\, the covering gonality of \$C_ k\$ equals the gonality of the curve \$C\$.\nMoreover\, we will see tha t under mild assumptions of generality on \$C\$\, the only curves \$E\\ ) passing through a general point of \\(C_k\$ and having the same gonalit y as \$C\$ are copies of \$C\$ of the form \$p+C\$\, where \$p\$ i s a point of \$C_{k-1}\$.\n LOCATION: END:VEVENT BEGIN:VEVENT SUMMARY:Türkü Özlüm Çelik (Koç University\, Istanbul\, Turkey) DTSTART:20240320T150000Z DTEND:20240320T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/23 DESCRIPTION:Title: Riemann Theta functions today\nby Türkü Özlüm Çelik (Koç University\, Istanbul\, Turkey) as part of UConn Algebra Seminar\n\n \nAbstract\nTheta functions play a central role in various branches of mat hematics. In this talk\, we will showcase their significance in algebra an d geometry\, particularly in studying complex algebraic curves with applic ations in soliton equations. We will explore how these applications can ad dress the Schottky problem\, a classical geometry problem\, thereby spotti ng a mutually enriching relationship. An emphasis will be on exploiting cu rrent trends in nonlinear algebra to advance our understanding of this int erconnection\, encompassing both symbolic and numerical computational appr oaches.\n LOCATION: END:VEVENT BEGIN:VEVENT SUMMARY:Andrei Bud (Goethe University Frankfurt Am Main) DTSTART:20240327T150000Z DTEND:20240327T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/24 DESCRIPTION:Title: Results in Prym-Brill-Noether theory\nby Andrei Bud (Goet he University Frankfurt Am Main) as part of UConn Algebra Seminar\n\n\nAbs tract\nMany results about the geometry of the moduli space of curves $\\ma thcal{M}_g$ are obtained via Brill-Noether Theory. When studying Prym curv es $[C\,\\eta]$ (i.e. curves together with a $2$-torsion line bundle) we c an consider Brill-Noether loci taking the extra structure into account. \n \nWe will study Prym-Brill-Noether loci at the level of moduli\, and prove the irreducibility of the universal Prym-Brill-Noether locus.\n LOCATION: END:VEVENT BEGIN:VEVENT SUMMARY:Tohru Nakashima (Japan Women's University\, Tokyo) DTSTART:20240417T230000Z DTEND:20240418T000000Z DTSTAMP:20260424T141902Z UID:uconnalgebra/25 DESCRIPTION:Title: Seshadri constants and AG codes from vector bundles\nby T ohru Nakashima (Japan Women's University\, Tokyo) as part of UConn Algebra Seminar\n\n\nAbstract\nThe error-correcting code is a technique for remov ing the noise which occurred in the process of transmitting information an d is widely used in our everyday life\, e.g. CD players or QR codes. By me ans of the codes based on algebraic curves originally introduced by V.D.Go ppa\, Tsfasman-Vladut-Zink has shown the existence of codes with very good asymptotic properties which improved the Gilbert-Varshamov bound.\n\nIn t his lecture\, we discuss the parameters of algebraic geometric codes obtai ned from higher dimensional varieties. Especially we give estimates for th e minimum distances of the codes on certain fibered varieties over a curve . By means of the Seshadri constants\, we also explain some results concer ning the codes defined from vector bundles of higher rank.\n LOCATION: END:VEVENT BEGIN:VEVENT SUMMARY:Marcella Manivel (University of Minnesota) DTSTART:20241016T150000Z DTEND:20241016T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/26 DESCRIPTION:Title: Automorphic differential operators and zeros of zeta\nby Marcella Manivel (University of Minnesota) as part of UConn Algebra Semina r\n\n\nAbstract\nAround 1915\, Polya and Hilbert independently speculated that self-adjoint operators could prove the Riemann Hypothesis for zeros o f L-functions\, and roughly 70 years later\, Colin de Verdière advanced t his idea by suggesting a physics-oriented way to make inhomogeneous equati ons into homogeneous ones. Making this rigorous\, Bombieri and Garrett in the 2010's showed that the simplest instance of Colin de Verdière's idea does not succeed because at most 94% of the zeros of zeta can participate in the spectrum of such operators. That is\, the discrete spectrum is smal l. This motivates understanding analogous operators with a large discrete spectrum. To do so\, we build on the well-known identification of the univ ersal enveloping algebra of a Lie algebra with the algebra of left invaria nt differential operators on the group\, recall an intrinsic characterizat ion of the Laplacian/Casimir on spaces of automorphic forms\, and discuss how we can attempt to understand the spectrum of related automorphic diffe rential operators.\n LOCATION: END:VEVENT BEGIN:VEVENT SUMMARY:Feliks Rączka (The Polish Academy of Sciences) DTSTART:20241023T150000Z DTEND:20241023T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/27 DESCRIPTION:Title: Frobenius pushforwards of vector bundles on projective spaces \nby Feliks Rączka (The Polish Academy of Sciences) as part of UConn Algebra Seminar\n\n\nAbstract\nA classical result of Hartshorne states tha t the Frobenius pushforward of a line bundle on a projective space decompo ses as a direct sum of line bundles\, and similar results are known for to ric varieties and quadrics. In this talk we will present a generalization of Hartshorne's theorem to higher rank vector bundles on projective spaces and we will explain how it can be used to compute cohomology of some vect or bundles. Surprisingly\, almost all discussed results are valid also in characteristic zero. The talk will be based on my recent preprint: https:/ /arxiv.org/abs/2402.07554\n LOCATION: END:VEVENT BEGIN:VEVENT SUMMARY:Tyler Genao (Ohio State University) DTSTART:20250226T160000Z DTEND:20250226T171500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/28 DESCRIPTION:Title: Uniform polynomial bounds on torsion from rational geometric isogeny classes\nby Tyler Genao (Ohio State University) as part of UCo nn Algebra Seminar\n\n\nAbstract\nIn 1996\, Merel showed that for any elli ptic curve $E$ defined over a number field $F$ of degree $d\\in\\mathbb{Z} ^+$\, the size of the torsion group of $E$ over $F$ is bounded by a const ant $B:=B(d)$ which depends only on $d$. Regarding $B$ as a function of $d $\, it is conjectured that $B$ can be polynomial in $d$. \nIn this talk\, I will discuss recent joint work with Abbey Bourdon which shows that $B$ i s polynomial in $d$ for torsion from the family $\\mathcal{I}_{\\mathbb{Q} }$ of elliptic curves which are geometrically isogenous to at least one ra tional elliptic curve. For torsion from the subfamily $\\mathcal{F}_{\\mat hbb{Q}}$ of elliptic curves with rational $j$-invariant\, our results stre ngthen prior work of Clark and Pollack.\n LOCATION: END:VEVENT BEGIN:VEVENT SUMMARY:Andreea Iorga (Cornell University) DTSTART:20250305T160000Z DTEND:20250305T171500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/29 DESCRIPTION:Title: Realising certain semi-direct products as Galois groups\n by Andreea Iorga (Cornell University) as part of UConn Algebra Seminar\n\n \nAbstract\nIn this talk\, I will prove that\, under a specific assumption \, any semi-direct product of a $p$-group $G$ with a group of order prim e-to-$p$ can appear as the Galois group of a tower of extensions $M/L/K$ with the property that $M$ is the maximal pro-$p$ extension of $L$ that i s unramified everywhere\, and ${\\rm Gal}(M/L) = G$. At the end\, I will show that a nice consequence of this is that any local ring admitting a surjection to $5$-adic or $7$-adic integers with finite kernel can be wr itten as a universal everywhere unramified deformation ring.\n LOCATION: END:VEVENT BEGIN:VEVENT SUMMARY:Bhargavi Parthasarathy (Syracuse University) DTSTART:20251112T160000Z DTEND:20251112T171500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/31 DESCRIPTION:Title: Homomorphisms of maximal Cohen-Macaulay modules over the cone of an elliptic curve\nby Bhargavi Parthasarathy (Syracuse University) as part of UConn Algebra Seminar\n\n\nAbstract\nConsider the ring \$R=k[ [x\,y\,z]]/(f)\$ where \$f=x^3+y^3+z^3\$ with an algebraically closed f ield \$k\$ and \$char(k)\\neq 3\$. In a 2002 paper\, Laza\, Popescu an d Pfister used Atiyah’s classification of vector bundles over elliptic c urves to obtain a description of the maximal Cohen-Macaulay modules (MCM) over \$R\$. In particular\, the matrix factorizations corresponding to r ank one MCMs can be described using points in \$V(f)\$. If \$M\,\\ N\$ are rank one MCMs over \$R\$\, then so is \${\\rm Hom}_R(M\,N)\$. In this talk\, I will discuss how the elliptic group law on \$f\$ can be us ed to obtain the point in \$V(f)\$ that describes the matrix factorizati on corresponding to \${\\rm Hom}_R(M\,N)\$.\n LOCATION: END:VEVENT BEGIN:VEVENT SUMMARY:Andrea Gallese (Scuola Normale Superiore Pisa) DTSTART:20260325T150000Z DTEND:20260325T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/32 DESCRIPTION:Title: How to compute the connected monodromy field of a CM abelian variety\nby Andrea Gallese (Scuola Normale Superiore Pisa) as part of UConn Algebra Seminar\n\n\nAbstract\nLet \$A\$ be an abelian variety def ined over a number field \$k\$. The connected monodromy field \$k(eA)\\ ) is the minimal extension of \\(k\$ over which every \$\\ell\$-adic Ga lois representation attached to \$A\$ has connected image\, or equivalen tly\, the minimal extension over which all Tate classes on all self-produc ts \$A^r\$ are defined. When \$k(eA)/k({\\rm End}\\\, A)\$ has positiv e degree\, “exotic” Tate classes arise on certain powers \$A^r\$ — classes not explained by the endomorphism algebra alone.\n\nWe explain ho w to compute \$k(eA)\$ when \$A\$ is the Jacobian of a curve with comp lex multiplication. We exploit CM theory to describe the algebra of Tate c lasses and make the Galois action on this algebra explicit in terms of per iods — suitable integrals of algebraic differential forms. Though period s are generally transcendental\, those attached to Tate classes are algebr aic\, so computing \$k(eA)\$ reduces to identifying these periods as exa ct algebraic numbers.\n LOCATION: END:VEVENT BEGIN:VEVENT SUMMARY:Linus Erik Rösler (EPFL) DTSTART:20260429T150000Z DTEND:20260429T161500Z DTSTAMP:20260424T141902Z UID:uconnalgebra/33 DESCRIPTION:Title: On Seshadri constants of adjoint divisors on surfaces and thr eefolds in arbitrary characteristic\nby Linus Erik Rösler (EPFL) as p art of UConn Algebra Seminar\n\nInteractive livestream: https://uconnvtc.w ebex.com/uconnvtc/j.php?MTID=mac925216be3c91aef41f76bc01e7b319\nPassword h int: $2^{12}$ 4 digits\n\nAbstract\nA conjecture due to Murayama states th at for a fixed dimension $n$\, there exist positive integers $e$ and $f$ s uch that for all smooth projective varieties $X$ of dimension $n$ and ampl e divisors $A$ on $X$\, the linear system $|eK_X+fA|$ is basepoint free. W hile this is known in characteristic zero and for $d\\leq 2$\, already the threefold case in positive characteristic is wide open. One of the most p romising approaches is to find effective lower bounds of Seshadri constant s of adjoint divisors. We develop a new approach in this direction\, and a s an application we recover the surface case and obtain effective rational ity results of small Seshadri constants of adjoint divisors on threefolds. \n LOCATION:https://uconnvtc.webex.com/uconnvtc/j.php?MTID=mac925216be3c91aef 41f76bc01e7b319 URL:https://uconnvtc.webex.com/uconnvtc/j.php?MTID=mac925216be3c91aef41f76 bc01e7b319 END:VEVENT END:VCALENDAR