12-4外代数 12.4.1域K上的线性空间V的到域K上的线性空间W的r重交错映射的定义 定义12.9设V是数域K上的n维线性空间,又设W也是K上的一个线性空间。 从 x…xV 到W的一个多线性映射f如果满足如下条件 f(aaaa)=0(i=1,2r-1) (即第i,i+1两个变元取V内同一个向量a1),则称f为一个r重交错映射。 12.3.2r重交错映射的三条性质

Good evening, my fellow Americans. First, I should like to express my gratitude to the radio and television networks for the opportunities they have given me over the years to bring reports and messages to our nation. My special thanks go to them for the opportunity of addressing you this evening. Three days f rom now, af ter a half century in the service of our country, I shall lay down the responsibilities of of fice as, in traditional and solemn ceremony, the authority of the Presidency is vested in my successor. This evening I come to you with a message of leave-taking and farewell, and to

Good evening my fellow Americans. Ten days ago, in my report to the nation on Vietnam, I announced a decision to withdraw an additional 150,000 Americans f rom Vietnam over the nex t year. I said then that I was making that decision despite our concern over increased enemy activity in Laos, in Cambodia, and in South Vietnam

Introduction [Again, by and large, I will follow OR, Chap. 8, so I will keep these notes to a minimum. Review of key definitions Recall our three payoff aggregation criteria: discounting, i.e (u2)≥1>(2 (also recall that the payoff profile corresponding to a stream (ut)is taken to be(1 8)2t18t-u(a)); limit of means

Thank you. Thank you, very much. Thank you very, very much, President Keohane. Mrs. Gorbachev, Trustees, Faculty, Parents, and I should say, Julia Porter, class president, and certainly my new best f riend, Christine Bicknell -- and, of course, the Class of 1990. I am really thrilled to be here today, and very excited, as I know you all must be, that Mrs. Gorbachev could join us

Ladies and gentlemen of the convention: My name is Geraldine Ferraro. I stand before you to proclaim tonight: America is the land where dreams can come true for all of us. As I stand before the American people and think of the honor this great convention has bestowed upon me, I recall

凸函数定义及其等价形式: 设f(x)在区间I上有定义,若对任意x1、x2∈I,A∈[0,1]成立不等式: f(Ax1+(1-4)x2)≤Af(x1)+(1-λ)f(x2) 则称f(x)是区间I上的凸函数

I have requested this opportunity to talk to the people of Massachusetts about the tragedy which happened last Friday evening. This morning I entered a plea of guilty to the charge of leaving the scene of an accident. Prior to my appearance in court it would have been improper for me to comment on these matters. But tonight I am free to tell you what happened and to say what it means to me

§1 复数及代数运算 §2 复数的几何表示 §3 复数的乘幂与方根 §4 区域

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