منابع مشابه
Complexity of infinite sequences with zero entropy
The complexity function of an infinite word w on a finite alphabet A is the sequence counting, for each nonnegative n, the number of words of lenght n on the alphabet A that are factors of the infinite word w. The goal of this work is to estimate the number of words of lenght n on the alphabet A that are factors of an infinite word w with a complexity function bounded by a given function f with...
متن کاملZero Entropy Is Generic
Dan Rudolph showed that for an amenable group, Γ, the generic measure-preserving action of Γ on a Lebesgue space has zero entropy. Here, this is extended to nonamenable groups. In fact, the proof shows that every action is a factor of a zero entropy action! This uses the strange phenomena that in the presence of nonamenability, entropy can increase under a factor map. The proof uses Seward’s re...
متن کاملWiring Specificity: Axon–Dendrite Matching Refines the Olfactory Map
In Drosophila, about 50 classes of olfactory receptor neurons enter the brain where their axons form highly specific synapses with the dendrites of identified partner neurons. A recent study has shown that genetic manipulations that shift the position of one class of postsynaptic dendrites can cause an exact corresponding shift in the location of their partner axons.
متن کاملZero Krengel entropy does not kill Poisson entropy
We prove that the notions of Krengel entropy and Poisson entropy for infinite-measure-preserving transformations do not always coincide: We construct a conservative infinite-measure-preserving transformation with zero Krengel entropy (the induced transformation on a set of measure 1 is the Von Neumann–Kakutani odometer), but whose associated Poisson suspension has positive entropy. Résumé. Nous...
متن کاملSemi-Automatic Bilingual Corpus Creation with Zero Entropy Alignments
In this paper, we describe a model for aligning books and documents from bilingual corpus with a goal to create “perfectly” aligned bilingual corpus on word-to-word level. Presented algorithms differ from existing algorithms in consideration of the presence of human translator which usage we are trying to minimize. We treat human translator as an oracle who knows exact alignments and the goal o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Ergodic Theory and Dynamical Systems
سال: 2016
ISSN: 0143-3857,1469-4417
DOI: 10.1017/etds.2015.136