No-liftability of automorphism groups of a K3 surface in positive characteristic

Moreover, the characteristic homomorphisms of principal bundles (the Chern- Weil homomorphism [K4], or the subject of this paper, the characteristic homomorphism for flat bundles)

Conversely, for any finite subset S of the plane, or for any finite family S of disjoint plane C-curves we construct an automorphism of the plane for which the set of fixed points

have defined, for an elliptic curve defined over a local field of residue charac- teristic p with ordinary reduction, an analogue of the Weierstrass σ-function which is defined on

We study the properties of the group Aut(D) of all biholomorphic trans- formations of a bounded circular domain D in C n containing the origin.. We characterize the set of all

Note that a similar proposition is well known for some classical sequences of integers. Such a property have the sequences of Fibonacci numbers, Mersenne numbers and others (see

It follows from the above observations that the method of extreme points, like other general optimization methods, does not yield satisfactory results when applied to extremal

The program co-operates with experimental chamber (figure 4b) in order to create optimal hybridisation parameters for a given hybrid type, and then, on the basis of the

As such, it also became an urban de- sign program of its own, which found its expression in the Forbidden City in Beijing (early XV century, vide). The square located to the east 9