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Home | Open Problem Garden

Welcome to the Open Problem Garden. A collection of unsolved problems in mathematics. Here you may:. Read descriptions of open problems. Post comments on them. Create and edit open problems pages (please contact us and we will set you up an account. Unfortunately, the automatic process is too prone to spammers at this moment.). We are eager to expand, so we are inviting contributions both large and small from all areas of mathematics. Many thanks to our contributors. More about the Garden.

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Home | Open Problem Garden | openproblemgarden.org Reviews

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Welcome to the Open Problem Garden. A collection of unsolved problems in mathematics. Here you may:. Read descriptions of open problems. Post comments on them. Create and edit open problems pages (please contact us and we will set you up an account. Unfortunately, the automatic process is too prone to spammers at this moment.). We are eager to expand, so we are inviting contributions both large and small from all areas of mathematics. Many thanks to our contributors. More about the Garden.

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Chromatic number of associahedron | Open Problem Garden

http://www.openproblemgarden.org/op/chromatic_number_of_associahedron

Chromatic number of associahedron. Wood, David R. Associahedron, graph colouring, chromatic number. Recomm. for undergrads:. June 2nd, 2015. Associahedra have unbounded chromatic number. The chromatic number of (the 1-skeleton of) associahedra was first considered by Fabila-Monroy et al [FFHHUW]. They proved that for the associahedron corresponding to edge flips in triangulations of a convex. Gon, the chromatic number is at most. The best known lower bound is. Private communication, Ruy Fabila-Monroy].

2

Combinatorics | Open Problem Garden

http://www.openproblemgarden.org/category/combinatorics

Also see: Graph Theory. Long rainbow arithmetic progressions. Rainbow AP(4) in an almost equinumerous coloring. Monotone 4-term Arithmetic Progressions. Even vs. odd latin squares. 3-accessibility of Fibonacci numbers. Dividing up the unrestricted partitions. Sequence defined on multisets. Square achievement game on an n x n grid. Transversal achievement game on a square grid. Length of surreal product. The Double Cap Conjecture. Saturation in the Hypercube. Turán Problem for $10$-Cycles in the Hypercube.

3

Unsorted | Open Problem Garden

http://www.openproblemgarden.org/category/unsorted

Rendezvous on a line. Pseudodifference of filter objects. Imp : Importance (Low , Medium , High , Outstanding ). Rec : Recommended for undergraduates. Note: Resolved problems from this section may be found in Solved problems. Theoretical Comp. Sci. Sum of prime and semiprime conjecture. A funcoid related to directed topological spaces. Infinite distributivity of meet over join for a principal funcoid. Entourages of a composition of funcoids. Weak saturation of the cube in the clique.

4

Geometry | Open Problem Garden

http://www.openproblemgarden.org/category/geometry

A conjecture on iterated circumcentres. Big Line or Big Clique in Planar Point Sets. Average diameter of a bounded cell of a simple arrangement. Convex 'Fair' Partitions Of Convex Polygons. Dense rational distance sets in the plane. Simplexity of the n-cube. Inequality of the means. Edge-Colouring Geometric Complete Graphs. Partition of Complete Geometric Graph into Plane Trees. Point sets with no empty pentagon. Covering a square with unit squares. Partitioning the Projective Plane.

5

Kneser–Poulsen conjecture | Open Problem Garden

http://www.openproblemgarden.org/op/kneser_poulsen_conjecture

Poulsen, E. T. Recomm. for undergrads:. September 25th, 2008. If a finite set of unit balls in. Is rearranged so that the distance between each pair of centers does not decrease, then the volume of the union of the balls does not decrease. The conjecture is known to hold if the rearrangement can be executed by a continuous motion such that the distance between every pair of centers monotonically increases throughout the motion. J Reine Angew. Math. 553 (2002), 221- 236. Theoretical Comp. Sci.

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Title_MoreQuestions

http://atzjg.net/admin/do/latest_post_more.php

Bessel 微分方程以及修改后的 Bessel 微分方程(The modified Bessel differential equation). 用 Lagrange 中值定理证明 $ frac{1}{x 1}. 求定积分 $ int 1 2 frac{1}{x(1 x n)}dx$. 求定积分 $ int 1 3 sqrt{(3-x)(x-1)}dx$. 求定积分 $ int 0 1 (1-x 2) 8 dx$. 求不定积分 $ int frac{e {- frac{x}{2} ( cos x- sin x)}{ sqrt{ sin x} dx$. 求不定积分 $ int frac{x 2 1}{x sqrt{1 x 4} dx$. 求不定积分 $ int frac{1 cos x}{1 sin 2 x}dx$. 设 $x$ 为实数, 且 $ x. F(n)= sum {i=1} {n} sum {d i} mathrm{gcd}(d, frac{i}{d})$. 一个凸多边形, 其内接三角形的面积小于等于 1, 问这个凸多边形的面积的最小上界是多少? L X T$ 的公式.

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Title_Slides

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Local Notes 是一款 Windows 下的笔记系统. 此软件无运行时间限制, 但未注册用户部分功能会有限制, 比如最多创建十个类别, 无法使用菜单功能. 安装后, 双击桌面上的快捷方式 start nginx, 然后打开浏览器, 输入网址 http:/ localhost/notes/, 会提示注册的相关信息. 即按下面的顺序 启动服务器 Nginx - 访问 Local Notes - 最后不用时关闭 Nginx. 注册网址: 注册 Local Notes. 适用平台: 在 Windows 和 Linux 下均可以使用. 使用方法: 使用 xelatex 编译. (所有文件使用 UTF8 编码). 软件授权: Freeware, 可以根据需要自行修改. 适用平台: 在 Windows 和 Linux 下均可以使用. 使用方法: 使用 xelatex 编译. (所有文件使用 UTF8 编码). 软件授权: Freeware, 可以根据需要自行修改. Calculator0.3.exe (88KB). Sample.tar.gz (29.7KB). New posted more .

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Title_Slides

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这里的 slide 建议使用 Firefox 浏览器查看, 或者使用 Google 的 chrome 浏览器更好. Recommend using Google's chrome browser to view the following slides. An Introduction to GAP. Vectors and Matrices in GAP. An Introduction to Matlab- I. An Introduction to Matlab- II. 原名: A First Course in DATABASE SYSTEMS (Third Edition). 作者: Jeffrey D. Ullman, Jennifer Widom. 译者: 岳丽华, 金培权, 万寿红等. 课件基于原作者网上的课件: http:/ infolab.stanford.edu/ ullman/fcdb.html. 教材: 数据结构与算法分析 C 描述(第3版). 原名: Data Structures and Algorithm Analysis in C (Third Edition).

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List of all categories. New posted more . Q and A sites. 2010-2011 - Design: Free Css Templates. Support: by center - 苏ICP备15014705号-1.

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index

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注意 test 用户级别比较低, 无法查看问题的答案. 不过您可以尝试更改 test 的主页.). 建议使用下列浏览器: Internet Explorer, Firefox, Safari, Chrome, Opera. 2x- tan(x-y)= int 0 {x-y} sec 2 tdt$, $y$ 看成 $x$ 的函数, 求 $ frac{d 2 y}{dx 2}$. Ln(x 2 y)=x 3 y sin x$, 求 $ frac{dy}{dx} biggr {x=0}$. 设 $y$ 是 $x$ 的函数, 且满足 $e {x y} cos(xy)=0$, 求 $ frac{dy}{dx}$ 和 $ frac{d 2 y}{dx 2}$. 设 $f(x) in C[a,b]$, $f(x) 0$, 证明: 对任意 $x 1,x 2 in(a,b)$, 存在 $ xi in[x 1,x 2]$, 使得 $f( xi)= sqrt{f(x 1)f(x 2)}$. 求直线 $ ell$ 在 $y$ 轴上的截距的取值范围. 过某一点的一条直线与圆相交, 已知截得的弦的长度, 求该直线的方程.

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Open Problems

http://csabatoth.org/open.html

Csaba D. Tóth. California State University, Northridge. Room SN 434, 18111 Nordhoff St. Northridge, CA 91330-8313. Cdtoth ♠ acm.org. The Open Problems Project. Erik D. Demaine - Joseph S. B. Mitchell - Joseph O'Rourke). Created by Matt DeVos and Robert ámal). Jeff Erickson, 2001).

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Useful Links | Dr. Behnaz Omoomi

http://bomoomi.iut.ac.ir/useful-links

Skip to main content. For Better Performance Please Use Chrome or Firefox Web Browser. Associate Professor of Mathematical Sciences. Open Problems in Combinatorics. How to Be a Good Graduate Student. Isfahan University of Technology. Department of Mathematical Sciences.

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[오픈프로필]연예기획 워크샵 프로그램 단체행사

혜정]화보 피팅모델 연기 MC. S성희]탄탄한 글래머 패션 광고모델. P하나]날씬한 차도녀 광고모델 방송인. K하예진]최고의 자태 잡지 화보 광고 패션모델 연기자. 이경아]이미지메이킹.메이크업기법.페이스마케팅.커리워먼이미지.비즈니스매너. 조수아]사랑 기다림의 정열의 CCM가수. S경선]섹시한 영화배우겸 광고모델 기업행사 전문MC. H수연]깔끔한 이미지 다양한 캐릭터 연기자 영화배우 광고 리포터 전문 MC. 신민수]팀웍팀빌딩게임 MC 웃음치료 레크리에이션 깨진유리창법칙 조직활성화. 진서현]직장예절 기본인성교육 비서수행기사CS 글로벌에티켓. 양평리조트]경기 양평 자연과 어우르는 단체 공간. 지혜]홍보 광고지면 도우미 모델. 모델매칭]모델촬영 주말가능 컨셉 : 수영복. 촬영대행]스튜디오 및 야외촬영l상품 상세 페이지제작. 모델 스튜디오 촬영 풀타임. 김승필]신비한 마술의 세계 마술체험강사. 아름2]청순 섹시 학생컨셉 화장품 광고 모델. K윤지]럭셔리 화이트닝 광고화보 모델.

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OpenPro, Inc. Best Web based ERP Software, Fully Integrated Open Archtitecture

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OpenPro.net: ERP software solution using open source technology. More value & features. - Home

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Home | Open Problem Garden

Welcome to the Open Problem Garden. A collection of unsolved problems in mathematics. Here you may:. Read descriptions of open problems. Post comments on them. Create and edit open problems pages (please contact us and we will set you up an account. Unfortunately, the automatic process is too prone to spammers at this moment.). We are eager to expand, so we are inviting contributions both large and small from all areas of mathematics. Many thanks to our contributors. More about the Garden.

openproblems.blogspot.com openproblems.blogspot.com

Open Problems

Thoughts on teaching science and whatever else comes to mind. Title from, among other places, the Clay Shirky tweet: "[T]he only good measure of student progress I know is the number of open problems they can successfully characterize.". Saturday, May 22, 2010. At prom gotta go. Saturday, April 17, 2010. AAPT Conference in Sacramento. In the morning everyone gets 5 minutes (enforced by an awesome gong) to present a short demo. Saw countless things I'd enjoy implementing, not least the gong itself. Fantas...

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Open Problems In Mathematics And Physics - Home

Open Problems In Mathematics And Physics. Lists of unsolved problems. Science magazine 125 big questions. Sir Michael Atiyahs Fields Lecture (.ps). Areas long to learn: quantum groups. Local and micro local analysis of large finite groups. Exotic areas: infinite Banach spaces. Large and inaccessible cardinals. Some recent links between mathematics and physics. Number theory and physics. Conjectured links between the Riemann zeta function and chaotic quantum-mechanical systems. Gauge field or connection.

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Open Problems in Real-Time Rendering SIGGRAPH courses page

Open Problems in Real-Time Rendering. SIGGRAPH 2016, Anaheim, CA. Open Problems in Real-Time Rendering. SIGGRAPH 2015, Los Angeles, CA. Open Problems in Real-Time Rendering.