نتایج جستجو برای: dichotomy
تعداد نتایج: 7625 فیلتر نتایج به سال:
In this paper, we discuss the concept of"choice" in filial care work. A dichotomy between choice and obligation is constructed in theoretical and empirical literature on filial care work. However, this dichotomy does not adequately reflect family caregiving experiences; for instance, choice and obligation are not mutually exclusive motivations. Rather, choice and obligation are "relational" and...
We consider a dichotomy for analytic families of trees stating that either there is a colouring of the nodes for which all but finitely many levels of every tree are nonhomogeneous, or else the family contains an uncountable antichain. This dichotomy implies that every nontrivial Souslin poset satisfying the countable chain condition adds a splitting real. We then reduce the dichotomy to a conj...
The hemispheric dichotomy on Mars is largely an expression of varying crustal thickness [1]. Although there is some disagreement as to the timing of its formation, the dichotomy is very old, forming during or before the early Noachian [2]. Several formation mechanisms, including both exogenic (giant impacts) [3] and endogenic processes including mantle convection [4], plate tectonics [5], and o...
The aim of this paper is to analyze the connections between the exponential dichotomy of a semigroup on a Banach space X and the admissibility of the pair (`p(N, X), `q(N, X)). We obtain necessary and sufficient conditions for exponential dichotomy of exponentially bounded semigroups using discrete time techniques.
In this paper we establish a dichotomy theorem for the complexity of homomorphisms to fixed locally semicomplete digraphs. It is also shown that the same dichotomy holds for list homomorphisms. The polynomial algorithms follow from a different, shorter proof of a result by Gutjahr, Welzl and Woeginger.
We examine the origin of photometrical properties of N-body merger remnants from the perpective of their orbital content. We show that disc mergers alone are unlikely to form a boxy-discy dichotomy in isophotal shape, because of the survival of disc-like orbits even in violent mergers. The shape of the different orbit families can vary strongly, depending on how violent the merger was. Minor ax...
We develop a general framework to examine how the presence of a monetary transmission mechanism shapes aggregate responses to shocks and the effects of monetary policy. Our framework nests two leading monetary models: a text-book New Keynesian setting and a setting where small transactions costs associated with adjustments in households’ money balances lead to an evolving distribution of money ...
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