Vinberg-Conway chain terminates just after a supersingular symplectic 6-fold with 100 (-2) divisors.
Abstract: Leech roots calculate fundamental domains of the hyperbolic lattices U+D_n up to n=22. Generalizing a result of Vinberg (1983, n=18), we apply this calculation for n < 21 to (semi-)automorphism groups of various K3 surfaces, and realize the case n=21 as the Picard lattice of the symplectic manifold in characteristic 2 in the title, which is expected to have an action of the Higman-Sims simple group.
My talk at YMSC zoom seminar in Tsinghua Univ. (Dec. 2021)
Prime Fano threefolds and Leech-like lattices
My talk at a zoom meeting in occasion of Prof. Mori's 70th birthday (Handscript, page 2 replaced)
Uniruledness of M11, and prime Fano 3-folds V22 of genus 12
My talk at Kinosaki Symposium in October 2010
Enriques surfaces and root systems -- Enriques surfaces of type E7 --
Abstract of my talk at Oberwolfach in September 2010
Enriques surfaces with many (semi-)symplectic automorphisms
Abstract of my talk at Oberwolfach in January 2010
Polarized K3 surfaces of genus 16
Abstract of my talk at Oberwolfach in September 2009
Numerically reflective involutions of Enriques surfaces
Geometric realization of root systems and the Jacobians of del Pezzo surfaces,
in "Complex geometry in Osaka: in honour of Professor Akira Fujiki on the occasion of his 60th birthday" (R. Goto, N. Honda, M. Ishida, Y. Namikawa and K. Yoshikawa, eds),
Osaka Math. Publ., Osaka University, 2008, pp. 134-136.
Polarized K3 surfaces of genus thirteen, in "Moduli spaces and arithmetic geometry", Adv. Stud. Pure Math. 45, Math. Soc. Japan, Tokyo, 2006, pp. 315--326.
Abstract of my talk at Oberwolfach in June 2006
A generalization of Mumford's example (joint work with H. Nasu)
Abstracts of my talks at Oberwolfach in July 2004 and in February 2005
Finite and infinite generation of Nagata invariant ring
Geometric proof of finite generation of certain rings of invariants
Vector bundles on a K3 surface, Proceedings of the ICM, Beijing 2002, vol. 2, 495-502.
Moduli of abelian surfaces, and regular polyhedral group (Update of Hokudai-bilevel_1999.pdf in Hannover 1999.)
#13: Abelian variety and spin representation
#14: Equations defining a space curve
#15: Simple Lie algebras and Legendre variety
Non-abelian Brill-Noether theory and Fano 3-folds
New developments in the theory of Fano threefolds: vector bundle method and moduli problem, Sugaku Exposition 15(2002), English translation of Sugaku 47(1995)
Duality of polarized K3 surfaces, in "New trends in algebraic geometry (1996 Warwick EuroConference)", CUP, 1999, pp. 311-326
Curves and K3 surfaces of genus eleven, in "Moduli of vector bundles" (ed. M. Maruyama), Marcel Dekker, New York, 1996, pp. 189-197
Vector bundles and Brill-Noether theory, in "Current Topics in Complex Algebraic Geometry", Cambridge Univ. Press, 1995
Curves and Grassmannians, 1992, Inchoen, Korea (Algebraic Geometry and related Topics, pp.19-40, International Press, 1993, Cambridge, MA)
Fano 3-folds, in "Complex projective geometry", Cambridge Univ. Press, 1992, pp. 255--263.
Polarized K3 surfaces of genus 18 and 20, in "Complex projective geometry", Cambridge Univ. Press, 1992, pp. 264--276.
Problems on characterization of the complex projective space, in `Birational Geometry of Algebraic Varieties, Open Problems, Kataata, 1988' (the 23rd Int'l Symp., Taniguchi Foundation), 1988, pp. 57--60.
Curves, K3 surfaces and Fano 3-folds of genus =< 10, "Algebraic Geometry and Commutative Algebra in Honor of Masayoshi NAGATA, I", (H. Hijikata, H. Hironaka, M. Maruyama, H. Matsumura, M. Miyanishi, T. Oda, K. Ueno eds.), 1987, pp. 357-377, Kinokuniya, Tokyo.
On the moduli spaces of bundles on K3 surfaces, I, "Vector bundles on Algebraic Varieties", Tata Institute of Fundamental Research/ Oxford Univ. Press, 1987, pp. 341-413.
Moduli of vector bundles on K3 surfaces, and symplectic manifolds, Sugaku Exposition 1(1987), English translation of Sugaku 39(1987)
Fourier functor and its application to the moduli of bundles on an abelian variety, in `Algebraic Geometry, Sendai, 1985', Series : Adv. Stud. Pure Math., vol. 10, (T. Oda ed.), 1987, pp. 515-550.
(Shigefumi Mori, ---), Classification of Fano 3-folds with B_2 >= 2, I, in `Algebraic and Topological Theories -- to the memory of Dr. Takehiko Miyata', (M. Nagata ed.), Kinokuniya, 1985, pp. 496-545.
(Shigefumi Mori, ---), On Fano 3-folds with B_2 >= 2, in `Algebraic Varieties and Analytic Varieties', Series : Adv. Stud. Pure Math., vol. 1, (S. Iitaka ed.), 1983, pp. 101-129.
Errata of "An Introduction to Invariants and Moduli"
(Cambridge Univ. Press 2003)
14) page 24, line 8 The coefficient "3" of the middle term in the right hand side should read "6".
Last modified: December 9, 2022.