نتایج جستجو برای: representation theories fall into three general categories 1
تعداد نتایج: 5414062 فیلتر نتایج به سال:
TILTING THEORY FOR QUIVERS AND RELATED CATEGORIES MORITZ GROTH AND JAN ŠŤOVÍČEK Abstract. We generalize the construction of reflection functors from classical representation theory of quivers to arbitrary small categories with freely attached sinks or sources. These reflection morphisms are shown to induce equivalences between the corresponding representation theories with values in arbitrary s...
We study time–dependent backgrounds in the low energy regimes of string theories. In particular the emphasis is on the general study of exotic phenomena such as positive acceleration and gravitational bounces. We generalize the usual Hawking–Penrose cosmological singularity theorems to higher–dimensional spacetimes and discuss their implications for time–dependent solutions in supergravity theo...
Following the categorical approach to universal algebra through algebraic theories, proposed by F.~W.~Lawvere in his PhD thesis, this paper aims at introducing a similar setting for general topology. The cornerstone of the new framework is the notion of emph{categorically-algebraic} (emph{catalg}) emph{topological theory}, whose models induce a category of topological structures. We introduce t...
INTRODUCTION Daily life requires frequent estimations of the risk of falling and the ability to avoid a fall. The objective of this study was to explore older women's and men's understanding of fall risk and their experiences with safety precautions taken to prevent falls. METHODS A qualitative study with focus group discussions was conducted. Eighteen community-dwelling people [10 women and ...
the present study aimed at exploring cognitions of iranian english teachers within the context of english for academic purposes (eap). to this end, the cognitions of two groups of eap teachers with respect to their pedagogical content knowledge (pck) and their sense of professional identity (pi) were probed. two language teachers and two content instructors who had at least five years of eap te...
Mathematical knowledge has reached a size when it has become extremely hard to organize. A new method to organize mathematical knowledge is through representing mathematical theories in a computer system. There are several languages that can organize mathematical knowledge. We will focus on the MMT language that provides a web scalable module system for mathematical theories. In MMT the theorie...
today, information technology and computers are indispensable tools of any profession and translation technologies have become an indispensable part of translator’s workstation. with the increasing demands for high productivity and speed as well as consistency and with the rise of new demands for translation and localization, it is necessary for translators to be familiar with market demands an...
It was shown in 12] that four-nger force-closure grasps fall into three categories: concurrent, pencil, and regulus grasps. We propose new techniques for computing these three types of grasps. We have implemented them and present examples.
this study purported to compare and contrast the use of self-mention and evidentials as two mtadiscourse features in opinion columns of persian and english newspapers. the theoretical basis of this study is the idea that metadiscourse features vary across cultural boundaries. for this purpose, 150 persian and 150 english opinion columns were collected based on three factors of topic, audience a...
Nowadays, digital signal processors (DSPs) are appropriate choices for real-time image and video processing in embedded multimedia applications not only due to their superior signal processing performance, but also of the high levels of integration and very low-power consumption. Filtering which consists of multiple addition and multiplication operations, is one of the most fundamental operatio...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید