Calf Seminar
About the Calf
Calf is the junior COW, an algebraic geometry seminar group primarily aimed at PhD students.
The organisers for academic year 2021/22 are, Erroxe Etxabarri-Alberdi (Loughborough), Oscar Finegan (Cardiff), and Samuel Johnston (Cambridge), as well as an extensive network of local organisers at different universities. Calf announcements are made using the COW mailing list. If you would like to get involved in the organisation, or suggest your institution as the next venue, please contact any of the people named above.
The COW seminar has some funding for travel expenses, and information on reimbursement can be found on the main COW webpage.
The Calf will maintain a hybrid approach to delivering the seminar, with talks delivered in person and with the option for those who cannot make the seminar in person to join via Zoom. The link to join will be in an email announcement made via the COW mailing list. If you do not have the link and wish to attend, please email one of the organisers.
About the Calf
Calf is the junior COW, an algebraic geometry seminar group primarily aimed at PhD students.
The organisers for academic year 2021/22 are, Erroxe Etxabarri-Alberdi (Loughborough), Oscar Finegan (Cardiff), and Samuel Johnston (Cambridge), as well as an extensive network of local organisers at different universities. Calf announcements are made using the COW mailing list. If you would like to get involved in the organisation, or suggest your institution as the next venue, please contact any of the people named above.
The COW seminar has some funding for travel expenses, and information on reimbursement can be found on the main COW webpage.
The Calf will maintain a hybrid approach to delivering the seminar, with talks delivered in person and with the option for those who cannot make the seminar in person to join via Zoom. The link to join will be in an email announcement made via the COW mailing list. If you do not have the link and wish to attend, please email one of the organisers.
Upcoming Meeting:
University of Birmingham, Lecture Theatre A, Watson Building, Wednesday 23 March 2022
13:00-17:00
Valentin Boboc (University of Manchester): Stability of Cotangent Bundles of Weierstrass Fibrations.
Abstract: Constructing Hermite-Einstein metrics on the tangent bundles of differentiable manifolds is a long-standing question with many geometric and physical implications. By the Kobayashi-Hitchin correspondence, this question is connected to the stability of the tangent bundle in the sense of Mumford and Takemoto. Whilst a fair amount is known about Fano and Calabi-Yau manifolds, in this talk we will discuss some new results concerning certain elliptic surfaces which can be obtained as Galois covers of ruled surfaces. For the sake of simplicity, we will restrict ourselves to smooth Weierstrass fibrations over the projective line. This is work for my PhD thesis, supervised by Hendrik Süß.
Aimeric Malter (University of Birmingham): A derived equivalence of the Libgober-Teitelbaum and the Batyrev-Borisov Mirror Constructions.
Abstract: In this talk we study the use of Variations of Geometric Invariant Theory (VGIT) to provide equivalences between derived categories of varieties associated to chambers of a GKZ fan . In particular, we will use methods of Favero and Kelly to study a mirror construction to the complete intersection of two cubics in P^5 due to Libgober and Teitelbaum, providing a derived equivalence to the Batyrev-Borisov mirror of the same complete intersection.
Joseph Prebble (Loughborough University): Mirror moduli spaces of lattice-polarised K3s mirrors of del Pezzo surfaces.
Abstract: Much discussion on the moduli space of lattice-polarised K3 surfaces begins with Igor Dolgachev's construction of a mirror lattice for such a surface. We will cover the elementary Hodge structure of a K3 surface and explore an example of a mirror moduli surface in the case of the lattice M.
Meanwhile, weak del Pezzo surfaces, smooth varieties with nef and big anticanonical divisors, may be endowed with a lattice polarisation in an analogous way, and there exists a mirror construction on them. We will note a conjecture on the correspondence between L-polarised del Pezzo surfaces and rational elliptic surfaces polarised by the negative definite mirror lattice and conclude with its compatibility with the lattice polarisation on an M-polarised K3 surface.
This page is maintained by Chris Seaman.
