Maximal groups in βS can be trivial
نویسندگان
چکیده
منابع مشابه
What Circuit Classes Can Be Learned with Non-Trivial Savings?
Despite decades of intensive research, efficient — or even sub-exponential time — distributionfree PAC learning algorithms are not known for many important Boolean function classes. In this work we suggest a new perspective for algorithmic research on these learning problems, inspired by a surge of recent research in complexity theory, in which the goal is to determine whether and how much of a...
متن کاملCan Selfish Groups be Self-Enforcing?
Algorithmic graph theory has thoroughly analyzed how, given a network describing constraints between various nodes, groups can be formed among these so that the resulting configuration optimizes a global metric. In contrast, for various social and economic networks, groups are formed de facto by the choices of selfish players. A fundamental problem in this setting is the existence and convergen...
متن کاملTesting sequential quantum measurements: how can maximal knowledge be extracted?
The extraction of information from a quantum system unavoidably implies a modification of the measured system itself. In this framework partial measurements can be carried out in order to extract only a portion of the information encoded in a quantum system, at the cost of inducing a limited amount of disturbance. Here we analyze experimentally the dynamics of sequential partial measurements ca...
متن کاملOn trivial ends of Cayley graph of groups
In this paper, first we introduce the end of locally finite graphs as an equivalence class of infinite paths in the graph. Then we mention the ends of finitely generated groups using the Cayley graph. It was proved that the number of ends of groups are not depended on the Cayley graph and that the number of ends in the groups is equal to zero, one, two, or infinity. For ...
متن کاملHow can Alzheimer's Patients be Helped?
پرستاری از بیمار مبتلا به بیماری آلزایمر چندان ساده نیست. حتی اگر از این امر که اختلال رفتاری فرد نشانه ای از بیماری اوست، آگاه باشید، اکثر مواقع نمی دانید که چگونه باید با او رفتار کنید. در این مقاله روشهای مناسبی ارائه گردیده تا خانواده بیمار بتواند با ۱۰ اختلال رفتاری شایع در بیماران مبتلا بدون احساس ناامیدی و خشم سازگاری یابند.
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: Topology and its Applications
سال: 2009
ISSN: 0166-8641
DOI: 10.1016/j.topol.2009.04.022