由买买提看人间百态

topics

全部话题 - 话题: mathbb
1 (共1页)
R******e
发帖数: 623
1
怎么写出$L= {a^{n!}},n\in \mathbb(N)$的文法?
就是重写规则
t**g
发帖数: 161
2
来自主题: TeX版 - \mathbb错误
写公式用到\mathbb,可是TexnicCenter报错:
Too many math alphabets used in version normal.
哪位高手给看看,多谢!
D**o
发帖数: 2653
3
来自主题: Mathematics版 - 关于煙花不堪剪
注意作者 \author{YHBKJ}
Atiyah-Bott Localization 1
2012-09-05 09:24:19
\documentclass[a4paper,12pt]{article}
\usepackage{amsfonts}
\usepackage{amsmath,amsthm,amssymb}
\usepackage{CJK,graphicx}
\usepackage{amscd}
\usepackage{amssymb}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{corollary}{Corollary}[section]
\newtheorem{definition}{Definition}[section]
\newtheorem{lemma}{Lemma}[section]
\begin{document}
\title{\textbf{\Huge{Atiyah-Bott Localization 1}}}\author{YHBKJ}\date{}\
maketitle
\begin{ab... 阅读全帖
b****t
发帖数: 114
4
Hi all,
I want to add some extra margins on either side.
like this
39 Consider the integer-optimization problem: \\
40 \\
41 \begin{tabbing}
42 $\mathbf{(P)}$ \= \kill
43 \> find $\underline{x}^*$ such that \\
44 \[ \underline{x}^* \in \argmin{\underline{x} \in \mathbb{X}}\: g (\
underline{x}) \]
45 \< where $\mathbb{X} \subseteq\mathbb{Z}^d$ and $\mathbb{Z}^d$ is
the set of $d$-dimensional
46 integer vectors, and $g:\mathbb{X} \to \mathbb{
t**s
发帖数: 4026
5
来自主题: ebiz版 - 有会latex的吗
能不能自动自动换行啊,一个很长的方程,比如下面这一个,有包子好伐
\noindent\(\frac{1}{2 \gamma \sigma _1 \sqrt{1-\rho _{2,1}^2}}\left(2 (r-\m
athbf{v}) (-1+\gamma ) \sqrt{1-\rho _{2,1}^2} \left(\sigma _4 \rho _{4,1}
g_{\gamma }{}^{(0,0,0,0,1)}[t,S,\mathbf{v},r,\mathbb{D}]+\sigma _3 \rho _{3,
1} g_{\gamma }{}^{(0,0,0,1,0)}[t,S,\mathbf{v},r,\mathbb{D}]+\sigma _2
\rho _{2,1} g_{\gamma }{}^{(0,0,1,0,0)}[t,S,\mathbf{v},r,\mathbb{D}]\right)+
2 S \sigma _1^2 \sqrt{1-\rho _{2,1}^2} \left(\sigma _4 \rho _{4,1} \left(g_{
\gamma
}{}^{(0,
g****g
发帖数: 1828
6
来自主题: WaterWorld版 - Normal distribution
In probability theory, the normal (or Gaussian) distribution, is a
continuous probability distribution that is often used as a first
approximation to describe real-valued random variables that tend to cluster
around a single mean value. The graph of the associated probability density
function is “bell”-shaped, and is known as the Gaussian function or bell
curve:[nb 1]
f(x) = \tfrac{1}{\sqrt{2\pi\sigma^2}}\; e^{ -\frac{(x-\mu)^2}{2\sigma^2}
},
where parameter μ is the mean (location of the pe... 阅读全帖
f*********g
发帖数: 632
7
Chomsky–Schützenberger theorem. If L is a context-free language admitting
an unambiguous context-free grammar, and a_k := | L \ \cap \Sigma^k | is the
number of words of length k in L, then \sum_{k = 0}^\infty a_k x^k is a
power series over \mathbb{N} that is algebraic over \mathbb{Q}(x).
s******s
发帖数: 8
8
来自主题: TeX版 - 怎么写正实数or正整数
\usepackage{amssymb}
$\mathbb{R}^+$
$\mathbb{Z}^+$
d*******e
发帖数: 1649
9
用文字。
\mathbb{N),\mathbb{R}
R******e
发帖数: 623
10
来自主题: Mathematics版 - 一个超越函数和超越数的问题。
$f(x)$ is a transcendental function over $mathbb{Q}(x)$,and analytic in disk
with natural boundary. If $a \gt 0$ and $a \in mathbb{Q}$, then $f(a)$ is a
transcendental number.
Has this assertion been proved? Any reference?
G********d
发帖数: 10250
11
来自主题: Quant版 - Two questions from GS
How do you define rational numbers?
If you define it as fraction field of the integer ring \mathbb{Z},
then this question comes naturally from the fact that \mathbb{Z} is a UFD.
N**G
发帖数: 392
12
来自主题: Military版 - 索南半小时能证出这个高考题么
I have an interesting question for you, it can be solved in elementary
school techniques. It comes from my own research.
begin{equation}
(2-N)a+2b+d_1+d_2+ldots+d_5=1,\
Na^2-2ab+d_1^2+d_2^2+ldots+d_5^2=1
end{equation}
Show that the number of integral solutions $(a,b,d_1,d_2,ldots,d_5)$ is
independent of $N\geq 0,N\in\mathbb{Z}$.
n********g
发帖数: 6504
13
来自主题: Military版 - 0.9无限循环是不是等于1 (转载)
小数部分的A=\sum_{i\in\mathbb{N}}\frac{a_i}{10^i}
这没实数啥事吧,只需要整数和自然数。
g****g
发帖数: 1828
14
来自主题: WaterWorld版 - 标准差
标准差(Standard Deviation),在概率统计中最常使用作为统计分布程度(
statistical dispersion)上的测量。标准差定义为方差的算术平方根,反映组内个体
间的离散程度。测量到分布程度的结果,原则上具有两种性质:
1. 为非负数值,
2. 与测量资料具有相同单位。
一个总量的标准差或一个随机变量的标准差,及一个子集合样品数的标准差之间,有所
差别。其公式如下所列。
标准差的观念是由卡尔·皮尔逊 (Karl Pearson)引入到统计中。
目录
[隐藏]
* 1 阐述及应用
* 2 标准差的定义及简易计算公式
o 2.1 标准计算公式
o 2.2 简化计算公式
o 2.3 随机变量的标准差计算公式
o 2.4 样本标准差
o 2.5 连续随机变量的标准差计算公式
o 2.6 标准差的性质
* 3 范例
* 4 正态分布的规则
* 5 标准差与平均值之间的关系
* 6 几何学解释
... 阅读全帖
b*w
发帖数: 2062
15
i am using winedt 5.4 beta, plus miktex, but seems the $\mathbb{R}$ never
works for me ;( it always says it's an "Undefined control sequence", really
weird. and it happens no matter what template i use, either just article, or
another one provided by the publiser llncs.
any help will be really appreciated!
b*w
发帖数: 2062
16
i found one package called "mathpazo", however after i included it the fonts
in the entire paper were changed but the \mathbb{R} still displayed as a
single R, any good pckage on your mind? thanks

really
or
R******e
发帖数: 623
17
没有感兴趣的啊?
T*********r
发帖数: 11175
18
\mathbb{1}
h******s
发帖数: 176
19
来自主题: TeX版 - [合集] A stupid question...
☆─────────────────────────────────────☆
futureguy (会飞的猪) 于 (Wed Jul 16 04:41:20 2008) 提到:
Hi, everyone. Sorry to interrupt you and sorry that I cannot type Chinese in
my office. My question is that how to type the mathematical symbol for
indicator function in Latex. I have tried \mathbb{1}, but it does not work.
Thank you very much
☆─────────────────────────────────────☆
kkff (克复) 于 (Wed Jul 16 12:16:41 2008) 提到:

in
.
Your question is not very clear. Do you want it be part of normal t
I*I
发帖数: 618
20
如题
多谢
D******y
发帖数: 1296
21
来自主题: TeX版 - 数学字体一问
之前在windows下用LeD还有WinEdt,安的是Miktex2.7,打公式的时候挺喜欢用
\mathbbold 字体
现在换了apple,MACtex并不支持这个字体
但是如果把mathbbold换成\mathbb 字体
虽然英文字母与上面的mathbbold一样,但是阿拉伯数字却显示完全不同,不再是加粗
的阿拉伯数字,而是特别诡异的不知道什么东西。。
请问一下有没有大侠遇到这种情况
谢谢
t*s
发帖数: 1504
22
win64 vim7.3安装完了什么都没改
现在的情况是vim中的拼写检查只看注释(它好像懂latex语义)
例如
\mathbb{worng1 wrod1}: worng2 wrod2
% worng3 wrod3
默认它唯一指出的错误是worng3 wrod3,其他都忽略了
怎么办!!!
A*********c
发帖数: 77
23
来自主题: Mathematics版 - simple latex question
One way is \mathbb{R}
l********e
发帖数: 3632
24
来自主题: Mathematics版 - 请问一个关于微分几何的问题
曲率如果只截面曲率(sectional curvature)那么只有三种
K=1的是球面,包括高维球面,或者他们的商空间,比如透镜空间(lens space,prizm
manifold等)
K=1的是欧式空间,或者它的商空间,比如环面,或者克莱因瓶等
K=-1的是双曲空间\mathbb H^n,或者它的商空间。
最后如果流行是联通的,那么局部常值和整体常值是一个意思。
如果你指的是其他曲率比如Ricci曲率,就复杂了。
t**s
发帖数: 4026
25
来自主题: Mathematics版 - 求助一个积分
\text{If}\left[\Re(a)>-1\land \Re(b)>-1\land (c\notin \mathbb{R}\lor \Re(c)\
leq 1),\Gamma (a+1) \Gamma (b+1) \, _2\tilde{F}_1(1,a+1;a+b+2;c),\text{
Integrate}\left[\frac{x^a (1-x)^b}{1-c x},\{x,0,1\},\text{Assumptions}\to \
Re(a)\leq -1\lor \Re(b)\leq -1\lor c>1\right]\right]
c*******e
发帖数: 150
26
note that the process Y_t satisfies dY_t = T_t Y_t dW_t
it is called the stochastic exponential of (T_t)_{t\in[0,T]}, sometimes
denoted as \epsilon(T)_t
If (T_t)_{t\in[0,T]} satisfies the Novikov condition, i.e.
\mathbb{E}[exp(1/2 \int_0^T T_s^2 ds)] < +\infty
then Y_t is also called an exponential martingale, since it is a true
martingale on [0, T]
1 (共1页)