منابع مشابه
Autobiography of Charles Caldwell, M.D
Scarborough touches on these and on many other matters but too often does not press the enquiry home. This may be due partly to limited space allowed for a various and complicated subject, for which the quantity and the quality of the evidence are alike uneven. There are appendices on medical biographies, on sources and problems, on the vexed question ofhuman dissection in Roman times, and on R...
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In this course we will consider mathematical objects known as lattices. What is a lattice? It is a set of points in n-dimensional space with a periodic structure, such as the one illustrated in Figure 1. Three dimensional lattices occur naturally in crystals, as well as in stacks of oranges. Historically, lattices were investigated since the late 18th century by mathematicians such as Lagrange,...
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This problem is concerned with efficiently determining constrained positions of objects while minimizing a measure of interconnect between the objects, as in physical layout of integrated circuits, commonly done in 2-dimensions. While most formulations are NP-hard, modern circuits are so large that practical algorithms for placement must have near-linear runtime and memory requirements, but not...
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The goal of this document is to provide a computationally practical guide to game-theoretic problems. We discuss the current intractibility of finding Nash Equilibria exactly, and of even specifying a game in normal form for a large number of players. But hope is not lost. Efficiently computable solution concepts are presented as alternatives to Nash Equilibria, with a corresponding notion of P...
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We start with a review of some elements from last lecture. Let us consider a marketplace where the excess demand on goods is a well-defined vector-valued function f(p) of the prices p. This happens, e.g., when traders’ utility functions are strictly concave, so that they have unique utility-optimizing bundles. In this case, the excess demand function is the difference of the total demand and th...
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ژورنال
عنوان ژورنال: American Journal of Roentgenology
سال: 1966
ISSN: 0361-803X,1546-3141
DOI: 10.2214/ajr.96.2.273