r****a
发帖数: 3249 | 1 【 以下文字转载自 LosAngeles 讨论区 】
发信人: rowena (最忆是江南), 信区: LosAngeles
标 题: response to 'income inequality' speech
发信站: BBS 未名空间站 (Fri Feb 28 11:24:29 2014, 美东)
January 2014 - Bob Lonsberry, Rochester talk radio personality responds to
Obama's 'income inequality speech':
Two Americas, the America that works and the America that doesn't. The
America that contributes and the America that doesn't. It's not the haves
and the have not's, it's the dos and the don'ts. Some people do their duty
as Ameri... 阅读全帖 |
|
I*****e
发帖数: 7085 | 2 【 以下文字转载自 LosAngeles 讨论区 】
发信人: rowena (最忆是江南), 信区: LosAngeles
标 题: response to 'income inequality' speech
发信站: BBS 未名空间站 (Fri Feb 28 11:24:29 2014, 美东)
January 2014 - Bob Lonsberry, Rochester talk radio personality responds to
Obama's 'income inequality speech':
Two Americas, the America that works and the America that doesn't. The
America that contributes and the America that doesn't. It's not the haves
and the have not's, it's the dos and the don'ts. Some people do their duty
as Ameri... 阅读全帖 |
|
r****a
发帖数: 3249 | 3 【 以下文字转载自 LosAngeles 讨论区 】
发信人: rowena (最忆是江南), 信区: LosAngeles
标 题: response to 'income inequality' speech
发信站: BBS 未名空间站 (Fri Feb 28 11:24:29 2014, 美东)
January 2014 - Bob Lonsberry, Rochester talk radio personality responds to
Obama's 'income inequality speech':
Two Americas, the America that works and the America that doesn't. The
America that contributes and the America that doesn't. It's not the haves
and the have not's, it's the dos and the don'ts. Some people do their duty
as Ameri... 阅读全帖 |
|
r****a
发帖数: 3249 | 4 January 2014 - Bob Lonsberry, Rochester talk radio personality responds to
Obama's 'income inequality speech':
Two Americas, the America that works and the America that doesn't. The
America that contributes and the America that doesn't. It's not the haves
and the have not's, it's the dos and the don'ts. Some people do their duty
as Americans, obey the law, support themselves, contribute to society and
others don't. That's the divide in America.
It’s not about income inequality, it’s ... 阅读全帖 |
|
B**W
发帖数: 2273 | 5 Don’t Tax the Rich. Tax Inequality Itself.
By IAN AYRES and AARON S. EDLIN
THE progressive reformer and eminent jurist Louis D. Brandeis once said, “
We may have democracy, or we may have wealth concentrated in the hands of a
few, but we cannot have both.” Brandeis lived at a time when enormous
disparities between the rich and the poor led to violent labor unrest and
ultimately to a reform movement.
Over the last three decades, income inequality has again soared to the sort
of levels that alarme... 阅读全帖 |
|
BR
发帖数: 4151 | 6 能详细说说吗？在euclidean space 里面我能理解wchwarz inequality，但是rudin 的
书里shwarz inequality 也是用在复数上面的。
具体的，shwarz inequality 说 |sum_{1 to n} a_j b_j|^2 小于等于 sum_{1 to n}|a_j|^2 sum_{1 to n}|b_j|^2。a_j 和b_j 都是复数。如果n=1, 这不就等同于|zw|=|z||w| 吗？
谢谢指点。 |
|
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l****z
发帖数: 29846 | 8 by Jammie
All of these places voted overwhelmingly for Obama, who has suddenly become
the champion of income inquality in between lavish vacations and golf
outings.
The gap between the wealthy and the poor is most extreme in several of
the United States’ most prosperous and largest cities.
The economic divides in Atlanta, San Francisco, Washington, New York,
Chicago and Los Angeles are significantly greater than the national average,
according to a study released last week by the Brookin... 阅读全帖 |
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j****s
发帖数: 156 | 9 What I have learned as Hadamard's Inequality is that for positive-semi-
definite matrix
det(A)<=a_11a_22.....a_NN
where a_ii is the $i$th diagonal elements of A.
This is different from the definiation of Hadamard's Inequality in Wiki and
Mathworld.
http://en.wikipedia.org/wiki/Hadamard's_inequality
And I cannot find the related matrials from google!!!!!!!!!!!!!!!!
What really is going on?
Thanks |
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A*******r
发帖数: 768 | 10 查题目叫 inequalities 的书至少有两本 |
|
j****s
发帖数: 156 | 11 What I have learned as Hadamard's Inequality is that for positive-semi-
definite matrix
det(A)<=a_11a_22.....a_NN
where a_ii is the $i$th diagonal elements of A.
This is different from the definiation of Hadamard's Inequality in Wiki and
Mathworld.
http://en.wikipedia.org/wiki/Hadamard's_inequality
And I cannot find the related matrials from google!!!!!!!!!!!!!!!!
What really is going on?
Thanks |
|
BR
发帖数: 4151 | 12 明白了，如果上面n=1, schwarz inequality 还是应该等号，即使在复数域，inner product 是定义为ab 还是a\bar{b} 无所谓。所以|zw|=|z||w| 可以说是 schwarz inequality 的special case，对
不对？
另一个问题，为什么复数域的内积要定义成a1\bar(b1) + a2\bar(b2), 而不是a1b1+
a2b2? 顺便，为什么复数的乘积要定义为 (a,b)(c,d)=(ac-bd, ad+bc)这个形式? 我知道这是定义，但为什么要这么定义？ |
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l******o
发帖数: 1550 | 13
明白了，如果上面n=1, schwarz inequality 还是应该等号，即使在复数域，inner
product 是定义为ab 还是a\bar{b} 无所谓。所以|zw|=|z||w| 可以说是 schwarz
inequality 的special case，对
不对？
另一个问题，为什么复数域的内积要定义成a1\bar(b1) + a2\bar(b2), 而不是a1b1+
a2b2? 顺便，为什么复数的乘积要定义为 (a,b)(c,d)=(ac-bd, ad+bc)这个形式? 我知
道这是定义，但为什么要这么定义？ |
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s**a
发帖数: 8648 | 14 Postdoctoral positions opening
The Center for the Study of Social Stratification and Inequality
Graduate School of Arts and Letters, Tohoku University, Sendai, Japan
http://www.sal.tohoku.ac.jp/coe/index-en.html
The Center for the Study of Social Stratification and Inequality (CSSI)
invites applications from excellent scholars for postdoctoral positions. The
number of the positions will be one to three depending on our budget for
the next fiscal year. The center pursues development of new theori |
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t*******y
发帖数: 11968 | 15 【 以下文字转载自 Mathematics 讨论区 】
发信人: talkdirty (讲脏话), 信区: Mathematics
标 题: How to prove the bound of Chebyshev's inequality can't be improved.
发信站: BBS 未名空间站 (Thu Oct 9 00:09:00 2008)
How to prove the bound of Chebyshev's inequality can't be improved.
请众牛指点或推荐个连接. 谢谢 |
|
C*******M
发帖数: 153 | 16 The following table shows the number of actual and expected deaths in the
last ten years:
Actual: 12 15 18 21 24 27 28 25 23 18
Expected: 20 22 24 26 27 26 24 22 19 16
I am wondering if I can use Theil's U2 inequality for accuracy the above
expected value. The formula is attached and I am confused about the formula.
There are several accuracy measurements: Mean Absolute Deviation (MAD), Root
Mean Square Error (RMSE), Mean Absolute Percentage Error (MAPE), Theil's
Measure of Inequality (U2), Co |
|
w*****8
发帖数: 703 | 17 Model, actor and singer Jonathan D. Lovitz found himself excused from jury
duty in New York this past week because he voiced his concern that, given
that he, a gay man, is made a second class citizen by the state denying him
the right to marry and adopt, he could not judge another citizen impartially.
Jonathan wrote on his Facebook (via Justin, Plus One):
"Just had an intense day at jury duty. During voir dire we were asked who
would not be impartial. I raised my hand and said "since I can't get... 阅读全帖 |
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c***n
发帖数: 1034 | 18 美国1945~1982年最高税率在60%~94%之间，那时动得，现在也动得。立法投票公开，社
会监督。看看哪些议员是专为后台代言的，2年后选掉他。
Sanders的税收方案简单说是这样：
Demanding that the wealthy and large corporations pay their fair share in
taxes. As president, Sen. Sanders will stop corporations from shifting their
profits and jobs overseas to avoid paying U.S. income taxes. He will create
a progressive estate tax on the top 0.3 percent of Americans who inherit
more than $3.5 million. He will also enact a tax on Wall Street speculators
who caused millions of America... 阅读全帖 |
|
c***n
发帖数: 1034 | 19 美国1945~1982年最高税率在60%~94%之间，那时动得，现在也动得。立法投票公开，社
会监督。看看哪些议员是专为后台代言的，2年后选掉他。
Sanders的税收方案简单说是这样：
Demanding that the wealthy and large corporations pay their fair share in
taxes. As president, Sen. Sanders will stop corporations from shifting their
profits and jobs overseas to avoid paying U.S. income taxes. He will create
a progressive estate tax on the top 0.3 percent of Americans who inherit
more than $3.5 million. He will also enact a tax on Wall Street speculators
who caused millions of America... 阅读全帖 |
|
g********e
发帖数: 1142 | 20 Wealth Inequality in America
https://www.youtube.com/watch?v=4DbkPBKtCss
在过去的20年内，这个分布大大的skew了，skew的超出我们的想像。
每次大衰退到来时，美国政府都会搞点事出来：
197x年，大衰退，尼克松“临时性”放弃美元的黄金本位，“临时”到了今天，40＋年。
美元开始贬值。
1981年，大衰退，美国政府开始了酝酿多时的401K计划，将以前大企业的pension计划
收为国家＋个人的401k计划，大大降低了大企业的运营成本 ，OK，他们付出了点match
，但和以前比，相差太多了。
搜索当年的报纸，媒体用词丝毫不弱于2008年，也声称当时的衰退超过大萧条，百年不
遇。大企业裁员。政府祭出401k，无非就是帮美国经济主体的大企业降低成本。
同时，从那时其，管理阶层和雇员阶层收入比例大大升高，ceo可以赚到上千个雇员的
薪水，而这在老一代美国人的道德观念中是可耻的。
于是，1983年开始，美国经济令人惊异的蓬勃发展。
1989，股市崩盘，老布什和obama一模一样的，搞了Resolution Trust ... 阅读全帖 |
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i****d
发帖数: 255 | 21 I would like to assign a single number for a couple of equations/
inequalities which
belong to the same problem, like
a+b = c
d+e = f (1)
g+h < i
This can be done if the number of equations is odd as I can put the number
after
the equation in the middle. What about if I have 4 or 6 equations? Any there
any other general ways for this?
I tried subequations also, but it does't align the equations.
Thank you for time! |
|
j*******r
发帖数: 1 | 22 Hi,
Does anyone have any idea to prove the following inequality :
Assuming a, b, c and q are real numbers satisfying :
1) a>=1, b>=1 , c>=1 , q>=1
2) abs(a-b)
where abs() denotes absolute values.
3) q>=2
Prove:
abs(a^q-b^q)
where ^ stands for power and q is the exponent.
Any suggestions and comments are very welcome.
Thanks.
Min |
|
j****q
发帖数: 1 | 23 JME, 50, 2003, P199-222, by Edward Glaeser, Jose Scheinkman and Andrei
Shleifer
Has anyone read this article? Another wonderful and interesting piece by
Glaeser and Shleifer.
It vividly characterizes the issue of social injustice and income inequality
in economies with weak legal institutions. Strongly recommend to read this
piece, and it almost crystal-clearly explained the "logic" and "consequences"
of current events such as BMW's killing case in Haierbin.
Also, I love to discuss the techn |
|
l*********g
发帖数: 9 | 24 The original Hadamard inequality states that
det(G(x_1,...,x_n))<=det(G(x_1,...,x_k))det(G(x_(k+1),...,x_n)) where, G is
the Gramian of vector x_1,...x_n
All other results follow from this. Let A=[x_1,...,x_n]
Then G(x_1,...,x_n)=A(^T)A By Hardamard we have
(detA)^2<=prod(||x_i||^2), which is what you find in wiki.
If H>=0 then H=A^2, where A>=0 A=[x_1,...,x_n] then H=G(x_1,...,x_n). By Had
amard you have det(H)<=prod(H_ii), which is a special case.
Hopefully this will make sense to you.
and |
|
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m****y
发帖数: 74 | 26 the link
http://mathworld.wolfram.com/ChebyshevSumInequality.html
gives the following two references:
Gradshteyn, I. S. and Ryzhik, I. M. Tables of Integrals, Series, and
Products, 6th ed. San Diego, CA: Academic Press, p. 1092, 2000.
Hardy, G. H.; Littlewood, J. E.; and Pólya, G. Inequalities, 2nd ed.
Cambridge, England: Cambridge University Press, pp. 43-44, 1988 |
|
A*******r
发帖数: 768 | 27 常用耍赖技巧
by the following well known xxx inequality |
|
t*******y
发帖数: 11968 | 28 How to prove the bound of Chebyshev's inequality can't be improved.
请众牛指点或推荐个连接. 谢谢 |
|
BR
发帖数: 4151 | 29 我在看Rudin 的Principles of mathematical analysis. 第14 页说，两个复数，z 和
w，|zw|=|z||w|。但根据第15页的schwarz inequality，前者似乎应该是小于等于后者
。是不是我的理解有误？ |
|
N***m
发帖数: 4460 | 30 schwarz inequality说的是内积吧？ |
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l******o
发帖数: 1550 | 31 it doesn't rule out the possiblility of the equal sign.
It it the case that, on page 14, it means there exist? Of course, you can fi
nd a complex number w for given z, such that |zw|=|z||w|.
我在看Rudin 的Principles of mathematical analysis. 第14 页说，两个复数，z 和
w，|zw|=|z||w|。但根据第15页的schwarz inequality，前者似乎应该是小于等于后者
。是不是我的理解有误？ |
|
BR
发帖数: 4151 | 32 对了，shwarz inequality 里面写的确实是a_j 乘以 \bar{b_j}。我其实不太明白为什
么要用这个b_j 的conjugate.
在复数域实际上相当于一个二维的euclidean space， 对不对？可是我看见说等号只限
于两个矢量proportional 的情况。
confused。 请谅解。 |
|
l******o
发帖数: 1550 | 33 the inner product is defined in that way.
the generalized inner product requires the conjugate under commute
对了，shwarz inequality 里面写的确实是a_j 乘以 \bar{b_j}。我其实不太明白为什
么要用这个b_j 的conjugate.
在复数域实际上相当于一个二维的euclidean space， 对不对？可是我看见说等号只限
于两个矢量proportional 的情况。
confused。 请谅解。 |
|
m*********s
发帖数: 368 | 34 inner product 是有定义的, 要满足一些条件的, 不是随便写的
你的数学学的也太潮了
product 是定义为ab 还是a\bar{b} 无所谓。所以|zw|=|z||w| 可以说是 schwarz
inequality 的special case，对 |
|
m*********s
发帖数: 368 | 35 check the definition of inner product first
product 是定义为ab 还是a\bar{b} 无所谓。所以|zw|=|z||w| 可以说是 schwarz
inequality 的special case，对
知道这是定义，但为什么要这么定义？ |
|
r*****r
发帖数: 630 | 36 内积要满足正定性
按照你的定义不满足了
不过这个和那个等式没有关系了
product 是定义为ab 还是a\bar{b} 无所谓。所以|zw|=|z||w| 可以说是 schwarz
inequality 的special case，对
知道这是定义，但为什么要这么定义？ |
|
e****z
发帖数: 119 | 37 Hi, guys, anyone knows about any studies on the existence of solutions to a
system of polynomial equalities and inequalities? Could you please give me
some references? Mathematics is not my major but I thought it was a routine
problem. However, I cannot find any useful information from google. Many
thanks in advance! |
|
b******x
发帖数: 826 | 38 For systems of equations, you test whether 1 is in the ideal generated by
the system. I know Groebner basis does it. But I don't know the case for
inequalities. |
|
D**u
发帖数: 204 | 39 Inspired by a problem from the math board.
There are 3 vectors in R^3, and the angles between each pair
of them are a, b and c.
Prove this triangle inequality:
sin(a) + sin(b) > sin(c) |
|
S*********g
发帖数: 5298 | 40 This is strict.
Actually, it is a theorem in information theorem.
I is just the entropy of the {1,2,3,4,...,n}.
It is -E(log x) if you explain x_i as possibility of i.
Use the Jenson's inequality, E(f(x))>=f(Ex) if f is convex.
You will get that the entropy reaches the maximum when {i} is
uniformaly distributed, say x_i=1/n.
The maximun value is log(n)
Notice -Log is convex.
Then,
E log(1/[nx]) <= log(E(1/[nx]))<= log(1)=0
-E(log(x))<=E(log(n))=log(n). |
|
s**a
发帖数: 8648 | 41 Call for papers: "Work & Inequality in the Global Economy: China, Mexico, US
",
UCLA, Oct. 2009
We invite you to submit proposals for this conference, to take place October
7-9, 2009 at UCLA in Los Angeles, California. We will focus on comparisons
and
connections between China, Mexico, and the United States. Speakers at the
conference will include scholars and activists from all three countries.
Major themes of the conference include:
* The impact of economic and environmental crisis on worker |
|
d*********a
发帖数: 255 | 42 for any k > 1, Let P(X=-1)=1/(2k^2) ,P(X=0)=1-1/k^2, P(X=1)=1/(2k^2)
EX=0 VarX=1/k^2 sigma=1/k
Chebyshev's inequality :P(|X-EX|>=k*sigma)<=VarX/(k*sigma)^2
In this case, P(|X-EX|>=k*sigma)=P(|X|>=1)=P(X=-1)+P(X=1)=1/k^2
VarX/(k*sigma)^2=1/k^2
They are equal.
the bound can not be improved.
. |
|
z*****h
发帖数: 111 | 43 求助高手，在sas中经常需要以下操作
proc sql;
create table tb as select
a.*, b.val
from left a left join right b
on a.ID=b.ID
and 1<=intck('month', b.date, a.date)<=60;
quit;
这个方法很慢，看了下用hash，貌似只能实现equality join. 有想过用proc expand
把left表中的每一个date扩展成整个过去的60个月，然后用date step merge 或者
hash. 这样就能把inequality join 变成 equality join, 但是不知道怎么实现。
请教proc expand 的方法怎么实现，另外如果有更好的方法，请不吝赐教！ |
|
l****z
发帖数: 29846 | 44 Progressive “Thought-Blockers”: Income Inequality
An ideological construct that exploits envy and resentment for political
advantage.
February 10, 2016
Bruce Thornton
Bruce Thornton is a Shillman Journalism Fellow at the David Horowitz Freedom
Center.
Throughout this primary season, Hillary Clinton and self-proclaimed
socialist Bernie Sanders have both been flogging the “crisis” of “income
inequality,” which is “at the center of their campaigns,” according to
CNN. Both have scourged the “greed” ... 阅读全帖 |
|
b*******n
发帖数: 1267 | 45 平等，真正的精神食粮
wengong121212
于2011-01-04 17:39:52翻译 | 已有1038人浏览 | 有0人评论
平等
Tags:平等 | 精神食粮
Op-Ed Columnist
<口>专栏版 专栏作家
Equality, a True Soul Food By NICHOLAS D. KRISTOF
平等，真正的精神食粮 Nicholas D. Kristof著
Published: January 1, 2011
2011年1月1日发布
John Steinbeck observed that “a sad soul can kill you quicker, far quicker
, than a germ.”
John Steinbeck 观察发现“一个忧郁的精神能更快的消灭你，甚至比我们消灭微生物
的速度还要快。”
Damon Winter/纽约时报
That insight, now confirmed by epidemiological studies, is worth bearing
in mind ... 阅读全帖 |
|
g******4
发帖数: 6339 | 46 朱敬一教你一次讀懂《21世紀資本論》
皮氏分析，這個資本累積逐漸集中化的趨勢，是有理論背景與走向軌跡可循的。如果我
們再不改弦更張，那麼大約30年之內，全球各主要市場經濟下的資本集中度，大概會有
80%以上集中到社會最富有10%的人手中。這種情況大略與《孤星淚》的寫作背景、或是
馬克思寫《資本論》時所見、或是法國大革命前夕的社會環境相當。由於財富分配太不
平均，社會上絕對充滿不安定的因子。總之，這麼不平等的社會，絕對是無法永續的。
這樣的「資本主義咦鹘K將動亂論」，其實與馬克思的「資本主義終將覆亡論」相當接
近。差別是：馬克思所參考的歷史資料非常少，但是皮凱提所引所用卻是極為廣泛周延
。馬克思的資本主義覆亡論顯然沒有實現，皮氏推論是不是也可能言之過早呢？
要去挑戰皮氏的「終將動亂論」，恐怕要比挑戰馬克思的論述來得困難。皮凱提用種種
數據佐證：如果沒有一次與二次世界大戰，西歐諸資本主義老字號國家極可能會有高得
不像話的資本集中度，而馬克思所預言的無産階級革命，就並非不可能。因此，我們只
能說是世界大戰的程咬金打亂了經濟咦鞯牟秸{，而不是馬克思的終極推論有什麼先驗
邏輯錯誤。無論如何，不論... 阅读全帖 |
|
l****z
发帖数: 29846 | 47 Obama’s Legacy: 5 Million Increase in Households Where No One Works
Posted by mishgea | March 6, 2016 1:45:48 | Economics
Promises Honored
Obama promised to do something about rising income inequality. He did. He
made matters worse.
Income inequality is up by three different measures, and there is a huge
five million jump in households in which no one works at all.
His policies prove that transfer payments reduce incentives to work and
lower incomes. Yet, Hillary Clinton and Bernie Sanders pr... 阅读全帖 |
|
g******4
发帖数: 6339 | 48 【 以下文字转载自 Military 讨论区 】
发信人: gogo2004 (挑灯看剑), 信区: Military
标 题: 《21世紀資本論》
发信站: BBS 未名空间站 (Mon Aug 11 23:21:52 2014, 美东)
朱敬一教你一次讀懂《21世紀資本論》
皮氏分析，這個資本累積逐漸集中化的趨勢，是有理論背景與走向軌跡可循的。如果我
們再不改弦更張，那麼大約30年之內，全球各主要市場經濟下的資本集中度，大概會有
80%以上集中到社會最富有10%的人手中。這種情況大略與《孤星淚》的寫作背景、或是
馬克思寫《資本論》時所見、或是法國大革命前夕的社會環境相當。由於財富分配太不
平均，社會上絕對充滿不安定的因子。總之，這麼不平等的社會，絕對是無法永續的。
這樣的「資本主義咦鹘K將動亂論」，其實與馬克思的「資本主義終將覆亡論」相當接
近。差別是：馬克思所參考的歷史資料非常少，但是皮凱提所引所用卻是極為廣泛周延
。馬克思的資本主義覆亡論顯然沒有實現，皮氏推論是不是也可能言之過早呢？
要去挑戰皮氏的「終將動亂論」，恐怕要比挑戰馬克思的論述來得困難。皮凱提用種種
數據佐證：如果... 阅读全帖 |
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l*******g
发帖数: 28502 | 49 ☆─────────────────────────────────────☆
anir (炉边人似月) 于 (Tue Dec 29 12:55:27 2009, 美东) 提到:
China's Divisive Development
Growing Urban-Rural Inequality Bodes Trouble by Joshua Levin
Disease, Vol. 23 (3) - Fall 2001 Issue
JOSHUA LEVIN is a Staff Writer at the Harvard International Review.
In an August 1999 incident reminiscent of the Cultural Revolution,
Chinese farmers rampaged through government offices and pillaged the
homes of the rich in Jiangxi province. Two thousand People’s Armed
Polic... 阅读全帖 |
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t**********y
发帖数: 56 | 50 Revisiting an old argument about the impact of capitalism
Jan 4th 2014 | From the print edition
INEQUALITY is one of the most controversial attributes of capitalism. Early
in the industrial revolution stagnant wages and concentrated wealth led
David Ricardo and Karl Marx to question capitalism’s sustainability.
Twentieth-century economists lost interest in distributional issues amid the
“Great Compression” that followed the second world war. But a modern
surge in inequality has new economists wo... 阅读全帖 |
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