2.6.1分块矩阵的乘法,准对角阵的乘积和秩 1、矩阵的分块和分块矩阵的乘法 设A是属于K上的m×n矩阵,B是K上n×k矩阵,将A的行分割r段,每段分别包含m,m2,,m,个行,又将A的列分割为s段,每段包含nn2,n个列。于是A可用小块矩阵表示如下:

8-3模m的剩余类环 8.3.1模m的剩余类环的定义 定义8.7设m设一个正整数,定义 /(m)={a+(m)a∈} 将模m的剩余类a+(m)记作a,现定义Z/m)中的加法和乘法如下: 此两种运算满足8.1.1中除第9)条以外的其余八条性质(其中0称为Z/(m)的零元素,1 称为Z/(m)的单位元素),于是Z/(m)构成一个代数系统,称为Z模理想(m)的剩余类环 或乙模理想(m)的商环

6.1中断控制器8259A 一、8259A的引脚信号,编程结构和工作原理 1、8259A的外部引脚信号和CPU相连 D0~D7:数据线 INT:中断请求(8259A→CPU)

Martin Luther King, Jr.: \I Have a Dream\ I am happy to join with you today in what will go down in history as the greatest demonstration for f reedom in the history of our nation. Five score years ago, a great American, in whose symbolic shadow we stand today, signed the Emancipation Proclamation. This momentous decree came as a great beacon light of hope to millions of Negro slaves who had been seared in the flames

Electronic Commerce Prentice Hall © 2006 2 Starting a New Online Business • Creating a New Company or Adding an Online Project – Step 1: Identify a consumer or business need in the marketplace – Step 2: Investigate the opportunity – Step 3: Determine the business owner’s ability to meet the need

Book 4 Teaching Plan Unit 1 TextA Who Is Great Text B How to Be a Leader I. teaching purpose and requirement A. understand the main idea and structure of the texts Text A main idea a. Who is great? \Someone who has made lasting contribution to human civilization is great\. b. the common characteristics the great achiever shave ------an unrelenting drive to succeed (Greatness is built upon tremendous amounts of study

一、单项选择题(10×1=10) 1、经济法律关系的客体是() A、享有经济权利和承担经济义务的当事人 、、、、 B、主体权利和义务所指向的对象 C、主体享有的经济权利和承担的经济义务 D、经济法律事实 2、行政制裁的方式是() A、拘留B、罚金C、返还原物D、支付违约金 3、股份有限公司注册资本的最低限额为()万元人民币 A、50B、1000C、3000D、5000 4、股东以工业产权、非专利技术作价出资的,不得超过注册资本的() A、10%B、20%C、25%D、35%

3.1 Preface 1. data object--- a set of instances or values for example: Boolean={ false,true} Digit={0,1,2,3,4,5,6,7,8,9} Letter={A, B, ....., a,b, ..... Z} NaturalNumber= {0, 1,2, ..... Integer={0,+1,-1,+2,-2,+3,-3,} String={a,, ..... ,aa, ab, ac

1设E是直线上的一有界集,mE>0,则对任意小 于mE的正数,恒有子集E1,使m*E1=c 证明:由于E有界,故不妨令EC[a,b 令f(x)=m*(en[a,x),则f(a)0,f(b)=m*E 下证f(x)在[a,b]上连续

Intensive Study As His Name Is, So Is He! Para.1 For her first twenty-four years, she'd been known as Debbie-a name that didn't suit her good looks and elegant manner. \My name has always made me think I should be a cook, she complained. \I just don't feel like a Debbie.\