a weakness of hashing Problem: For any hash function h, a set of keys exists that can cause the average access time of a hash table to skyrocket An adversary can pick all keys from tkeU: h(k)=i for some slot i IDEA Choose the hash function at random independently of the keys

Eco514 Game Theory Lecture 12: Repeated Games(1) Marciano Siniscalchi October 26, 1999 Introduction [By and large, I will follow OR, Chap. 8, so I will keep these notes to a minimum.] The theory of repeated games is double-edged sword. On one hand, it indicates how payoff profiles that are not consistent with Nash equilibrium in a simultaneous-move game might be achieved when the latter is played repeatedly, in a manner consistent with Nash or

Ch. 23 Cointegration 1 Introduction An important property of (1) variables is that there can be linear combinations of theses variables that are I(O). If this is so then these variables are said to be cointegrated. Suppose that we consider two variables Yt and Xt that are I(1) (For example, Yt= Yt-1+ St and Xt= Xi-1+nt.)Then, Yt and Xt are said to be cointegrated if there exists a B such

Eco514 Game Theory Lecture 8.5: More on Auctions; PS#1 Marciano Siniscalchi October 14, 1999 Introduction These notes essentially tie up a few loose ends in Lecture 8; in particular, I exhibit examples of inefficiencies in first-and second-price auctions I would also like to briefly comment on Questions 1 and 2 in Problem Set 2

高等数学第九章习题 一选择填空 11(+yd(x+ydd(x2+(122的大小 D 关系为: ) (A)1=2(B)I1>2(C)I1<12(D)无法判断 2lim(yz)d=()其中2为:(x-a)2+(y-b)2+(z-c)2≤r2,且

第1章公钥密码体制习题 1.在群Z*n中:()有多少生成元?(i)找出它的所有生成元。(i)找出它的所有子群。 2.令n是一个奇合数且不是素数的幂,群Z*有生成元吗?

with x(0)=I exist and are unique on the time interval t E [ 0, 1] for allTER\.Then discrete time system(4. 1)with f(5)=r(, i)describes the evolution of continuous time system(4.)at discrete time samples. In particular, if a is continuous then so is f Let us call a point in the closure of X locally attractive for system(4. 1)if there exists

一、n维向量 1.定义 n个有次序的数a1,a2,,an所组成的数 组称为n维向量,这n个数称为该向量的个分量, 第i个数a称为第i个分量

1.4事件的独立性 事件的独立性 例1已知袋中有5只红球,3只白球.从袋中有放回地取球两次,每次取1球.设第i次取得白球为事件A;(i=1,2).求

Marciano Siniscalchi Game Theory (Economics 514) Fall 1999 Logistics We(provisionally) meet on Tuesdays and Thursdays 10: 40a-12: 10p, in Bendheim 317. I will create a mailing list for the course. Therefore please send me email at your earliest convenience so I can add you to the list. You do not want to miss important announcements, do you?