(19121999) 
The Fourth Geometry Meetingdedicated to the centenary of A.D.AlexandrovAugust 2024, 2012 SaintPetersburg, Russia 

Preliminary Program
Monday 20.08
9:3010:15 Opening: S. Kutateladze& Yu.Reshetnyak : Aleksandr D. Alexandrov (1912–1999) D.Burago : A few words about A.D.Alexandrov 10:15  10:45 Coffee break 10:45  11:30 Banchoff : A.D.Alexandrov and the Birth of the Theory of Tight Surfaces 11:40  12:25 Fillastre : Reversed AlexandrovFenchel inequalities 12:40  15:00 Lunch 15:00  15:40 Section A: Panina : Extremal polygons in $R^3$ Section B: Gaifullin : Sabitov Polynomials for Volumes of Fourdimensional Polyhedra 15:40  16:00 Coffee break 16:00  17:55 Work in three sections A, B, C Section A 16:00  16:25 Grossi : Poincare's polyhedron theorem for compact 4manifolds 16:30  16:55 Ananin : Complex hyperbolic equidistant loci 17:00  17:25 Chernov : Smooth Cosmic Censorship and determining causality from linking 17:30  17:55 Apanasov : Andreev theorem, combinatorically symmetric polyhedra and varieties of representations Section B 16:00  16:25 Caldiroli : Radial graphs over spherical domains with prescribed mean curvature. 16:30  16:55 Musina : Planar loops with prescribed curvature: existence, multiplicity and uniqueness results 17:00  17:55 Bogoyavlenskaya : Complete Riemannian metrics with holonomy group G_2 on deformations of cones over S^3xS^3 17:30  17:55 Rosemann : hprojective transformations on compact Kahler manifolds Section C 16:00  16:25 Slutskiy : On a necessary flexibility condition of a nondegenerate suspension in Lobachevsky 3space 16:30  16:55 Kozachok : Perfect prismatoids and the conjecture concerning with face numbers of centrally symmetric polytopes 17:00  17:25 A.Zhukova : Morse index of a cyclic polygon 17:30  17:55 Dolgonosova : Manifolds of Morphisms between Foliations with Transverse Linear Connection 18:00 Welcome party
Tuesday 21.08 9:3010:15 Shioya : Concentration, Ricci curvature, and eigenvalues of Laplacian 10:15  10:45 Coffee break 10:45  11:30 MartinezMaure : The Minkowski problem for hedgehogs (Minkowski differences of convex bodies): uniqueness results 11:40  12:25 D.Burago, S.Ivanov : On Discretization in Riemannian Geometry 12:40  15:00 Lunch 15:00  15:40 Section A: Makai : The infimum of the volumes of convex polyhedra of any given facet areas is 0. Section B: Honda : Ricci curvature and angles 15:40  16:00 Coffee break 16:00  17:55 Work in three sections A, B, C Section A 16:00  16:25 Kitabeppu : Coarse Ricci curvature on metric measure spaces 16:30  16:55 Kuwae : On nonlinear spectral gap for symmetric Markov chains with coarse Ricci curvature 17:00  17:25 Mitsuishi : Collapsing threedimensional Alexandrov spaces 17:30  17:55 Yokota : On the filling radius of positively curved Alexandrov spaces Section B 16:00  16:25 Mimura : Rigidity result related to mapping class groups 16:30  16:55 Masley : Twogenerated groups of Mobius transformations: geometry and sufficient conditions for the discreteness 17:00  17:25 Gekhman : Dynamics of ConvexCocompact Subgroups of Mapping Class Groups 17:30  17:55 Storozhuk : Occasionally attracting compact sets Section C 16:00  16:25 Kordyukov : Classical and Quantum Dynamics on Orbifolds 16:30  16:55 Rovenski : Flows of metrics on a fiber bundle 17:00  17:25 N. Zhukova : The structure of conformal foliations 17:30  17:55 Medvedev : Conformal circles and the geometry of the 3rd order ODEs systems Wednesday 22.08
9:3010:15 Vesnin : Rightangled hyperbolic polyhedra 10:15  11:05 Coffee break 11:05  11:40 Izmestiev : Infinitesimal rigidity of convex surfaces: variational methods and duality 11:40  12:25 Berndt : Hyperpolar actions on noncompact symmetric spaces 12:40  15:00 Lunch 15:00 Guided tour round the city Thursday 23.08
9:3010:15 Ohta : Ricci curvature in Finsler geometry and applications 10:15  10:45 Coffee break 10:45  11:30 Nikonorov: On Killing fields of constant length on Riemannian manifolds 11:40  12:25 Wilking: A generalization of Gromov's almost flat manifold theorem 12:40  15:00 Lunch 15:00  15:40 Work in two sections Section A: Sabitov : Two new classes of rigid polyhedra and their volume polynomials in the spaces of constant curvature Section B: Remy : Simple and nonsimple groups acting on buildings, overview and open questions 15:40  16:00 Coffee break 16:00  17:55 Work in three sections A, B, C Section A 16:00  16:25 Park : Aleksandrov problem in linear nnormed spaces 16:30  16:55 Kim : Inequalities in additive Nisometries on linear Nnormed Banach spaces 17:00  17:25 Makeev : On pyramids in a threedimensional normed space 17:30  17:55 Magazinov : Convex Hull of a Poisson Point Process in the Clifford Torus Section B 16:00  16:25 Takatsu : Displacement convexity of generalized relative entropies 16:30  16:55 Xu : Almost Nilpotency of the fundamental groups of almost nonnegatively curved Alexandrov space 17:00  17:25 Kornev : Invariant Decomposable Almost Complex Structures on Homogeneous Spaces 17:30  17:55 Daurtseva : The space of leftinvariant orthogonal almost complex structures on 6dimensional Lie groups Section C 16:00  16:25 Omori : On the existence of harmonic maps via exponentially harmonic maps 16:30  16:55 Fock : Minimal surfaces in hyperbolic space and hyperkaehler geometry 17:00  17:25 Savas Halilaj : The strong elliptic maximum principle for vector bundles and applications to minimal maps 17:30  17:55 Reyes : Nonlocal equations and equations of pseudospherical type, fluids and strings 18:30 Conference dinner
Friday 24.08 9:3010:15 Sharafutdinov : Local audibility of a hyperbolic metric 10:15  10:45 Coffee break 10:45  11:30 Repovs : Topological properties of Busemann Gspaces 11:40  12:25 Vodopyanov, Basalaev : RashevskyChow and BallBox theorems on Carnot manifolds with C^1smooth vector fields 12:40  15:00 Lunch 15:00  15:40 Work in two sections Section A: Goldshtein: About L_{q,p}cohomology. Section B: Mokhov : Compatible metrics and integrable systems 16:00  17:55 Work in three sections A, B, C Section A 16:00  16:25 Arvanitoyeorgos : A method for the construction and solution of the Einstein equation on generalized flag manifolds 16:30  16:55 Selivanova : Metric geometry of nonregular weighted CarnotCaratheodory spaces and applications 17:00  17:25 Gladunova : On Half Conformally Flat Lie Groups With LeftInvariant Riemannian Metrics 17:30  17:55 Oskorbin : Sectional Curvature Operator of the Conformally Flat Riemannian Manifolds Section B 16:00  16:25 Fominykh : On the complexity of 3manifolds 16:30  16:55 Mulazzani : On knots and links in lens spaces 17:00  17:25 Sullivan : Triangulations with restricted valence as spherical cone manifolds 17:30  17:55 Smirnov : Quasiisometric invariants of the fundamental group of an orthogonal graphmanifold Section C 16:00  16:25 Zamfirescu : Few Alexandrov surfaces are Riemann 16:30  16:55 V. Alexandrov : Continuous deformations of polyhedra that do not alter the dihedral angles 17:00  17:25 Golubyatnikov : Geometry of Phase Portraits of Nonlinear Dissipative Dynamical Systems 17:30  17:55 Kononenko : The slow surface in a problem of chemical kinetics 