ar X iv : m at h / 06 06 66 7 v 1 [ m at h . PR ] 2 7 Ju n 20 06 PERIODIC ATTRACTORS OF RANDOM

ar X iv : m at h / 06 06 67 1 v 1 [ m at h . A C ] 2 7 Ju n 20 06 PRÜFER ⋆ – MULTIPLICATION DOMAINS AND ⋆ – COHERENCE

ar X iv : m at h / 06 06 33 9 v 1 [ m at h . SP ] 1 4 Ju n 20 06 Eigenfunction expansions associated with 1 d periodic differential operators of order 2 n

We prove an explicit formula for the spectral expansions in L(R) generated by selfadjoint differential operators (−1) d dx2n + n−1

ar X iv : m at h / 06 06 67 7 v 1 [ m at h . D S ] 2 7 Ju n 20 06 COMPLEX MAPS WITHOUT INVARIANT DENSITIES

We consider complex polynomials f (z) = z ℓ + c1 for ℓ ∈ 2N and c1 ∈ R, and find some combinatorial types and values of ℓ such that there is no invariant probability measure equivalent to conformal measure on the Julia set. This holds for particular Fibonacci-like and Feigenbaum combinatorial types when ℓ sufficiently large and also for a class of 'long–branched' maps of any critical order.

ar X iv : m at h / 06 01 66 7 v 1 [ m at h . A P ] 2 7 Ja n 20 06 The linear constraints in Poincaré and Korn type inequalities ∗

We investigate the character of the linear constraints which are needed for Poincaré and Korn type inequalities to hold. We especially analyze constraints which depend on restriction on subsets of positive measure and on the trace on a portion of the boundary.

ar X iv : m at h / 04 06 08 3 v 3 [ m at h . PR ] 1 7 Ju n 20 05 Large deviations for empirical entropies of g - measures

The entropy of an ergodic finite-alphabet process can be computed from a single typical sample path x1 using the entropy of the k-block empirical probability and letting k grow with n roughly like logn. We further assume that the distribution of the process is a g-measure. We prove large deviation principles for conditional, non-conditional and relative k(n)-block empirical entropies.