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월별 글 목록: 2009년 4월월
Math Forum • View topic – Interactive math exersises web (www.emathematics.net) Fantas
Hi, I am a math teacher and I send you this e-mail to suggest you a new link about an interactive math exercises web.
The web site is www.emathematics.net and has Interactive exercises, lessons, and worksheets to practice knowledge of whole numbers, integers, divisibility, fractions, exponents and powers, percentages, proportional reasoning, linear equations, quadratic equations, monomials, polynomials, special products, radicals, systems of equations, exonential and logarithmic equations, geometry, sequences and series, functions and graphs, trigonometry, determinants, matrices, inner product, factorial, variations, permutations and combinations.
It is very useful to work on your self or with your students (if you are a teacher).
Math Forum • View topic – RSA algorithm problem
Hi friends,my trying to create implementation of RSA algorithm, when I follow the algorithm I create:random big prime integers – p and qcalculate n = p*qphi = (p-1)*(q-1)also, I calculate, e and dI know that n and e represent the public key, but I have to represent the public key as single string, is there way how to this conversions:n, e —> public_key_as_string_variablepublic_key_as_string -> n and e BigInteger variables n, d —> private_key_as_string_variable private_key_as_string_variable —> n, d
Thanks you very much in advanced for every help
Math Forum • View topic – PCIMC Final Event F.5
Moderators: mathdb, YingYing
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Math Forum • View topic – Getting approval of account registration
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Math Forum • View topic – 圓周率日活動 [DETAILS UPDATED]
3 月 14 日是圓周率日，也是數學資料庫的生日！如此大日子，我們安排了一連串的活動，大家萬勿錯過！ * 當天上午有數學資料庫協辦的培正數學邀請賽決賽（詳見比賽網頁）。 * 當天下午數學資料庫將舉辦 academic seminar（詳見本文後段）。 * 當天晚上是數學資料庫的週年晚宴暨生日會，將有一系列的抽獎和遊戲活動（詳情快將在此公佈）。此外，網站資源創作比賽將於明天（2 月 28 日）截止，大家緊記遞交作品！========================================================
關於 academic seminar：
日期：2009 年 3 月 14 日（星期六）時間：下午 4 時 15 分至 5 時 30 分地點：香港城市大學 P4909 室（紫區）講者：李靜文小姐（德國柏林大學博士研究生）語言：粵語輔以英語主題：從「什麼是數學研究」到「一個圖論的分類問題」 From “What is Mathematical Research” to “A Characterization Problem in Graph Theory”簡介：作為一名數學系的研究生，我被別人問得最多的問題可算是「數學究竟有什麼可以被研究呢？」。在這次研討會中，我會跟大家分享我在圖論裡的一個分類問題的研究 —- 平面圖次序維度最大為2的分類，讓聽眾可一嘗數學研究的滋味。本講座內容適合中學生。
As a graduate student in Mathematics, the most common question I have ever been asked is “What are there to be researched in Mathematics?”. In this seminar, I will give the audience a taste of mathematical research by sharing my experience of working on a characterization problem in Graph Theory — the characterization of planar maps with order dimension at most 2.
Last edited by hoshian on Fri Mar 06, 2009 1:18 pm, edited 1 time in total.
Math Forum • View topic – MD academic seminar on Aug 31 (Sunday)
MD 今個星期日有 Academic Seminar:日期：2008 年 8 月 31 日（星期日）時間：下午 5 時至 6 時地點：香港中文大學邵逸夫夫人樓 C1（見註）語言：粵語輔以英語註：從港鐵大學站（中文大學出口）轉右，可乘坐中文大學校巴於第二個站（潤昌堂）下車，步行約兩分鐘即可抵達邵逸夫夫人樓。星期日的校巴於每小時 00、20、40 分在大學站開出，車程約 5 分鐘。============================================================Topic: Matrix and TransformationsSpeaker: Jessey Lin (undergraduate student at CUHK)Abstract:
For those of you who are of first encounter with the matrix mathematically, you will get a glimpse of how this ‘creature’ is added, subtracted or multiplied. For those of you who are all too familiar with the matrix and its operations, it might be a good chance to refresh your memories of representing reflections, the principal axis theorem, and other geometric transformations which are often used in other branches of geometry. Welcome to all!
Math Forum • View forum – Bug Reports or suggestions
Moderators: mathdb, YingYing
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hawk_wing_1999 |
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Sun Sep 07, 2008 1:34 am |
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| How about using Latex here? |
Michael |
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777 |
Mon Sep 24, 2007 1:24 am |
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fungbenjamin |
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Tue Jun 05, 2007 11:40 am |
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CY |
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1124 |
Thu Feb 08, 2007 1:41 pm |
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| is there any Latin people here?? |
Guía Rojo |
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Mon Feb 20, 2006 5:30 pm |
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| LaTeX |
leepakhin |
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Wed Dec 14, 2005 10:58 am |
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| Suggestion -> LaTeX Help |
Kenny TM~ |
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1003 |
Sat Nov 05, 2005 2:34 pm |
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| squares |
mathman |
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Mon Jun 20, 2005 9:26 pm |
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| About the page of Beauty Contest of Theorems |
CY |
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832 |
Mon Jun 06, 2005 11:01 am |
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| How to setup Latex in a phpbb ??? |
ssfsimon |
0 |
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Thu May 26, 2005 2:30 pm |
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| Instruction on using Latex |
Michael |
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765 |
Tue May 24, 2005 2:58 am |
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| ¼ÐÃD¿ù»~ |
CY |
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898 |
Sun Apr 10, 2005 12:33 pm |
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| Is there any zone for us to discuss about maths’ philo? |
kinhang |
0 |
903 |
Mon Feb 14, 2005 12:15 pm |
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| How to type … |
Daniel |
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Sat Dec 11, 2004 9:24 am |
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874 |
Fri Sep 10, 2004 9:37 am |
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pawnbingfu |
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Wed Jun 30, 2004 5:33 am |
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tamwingyin |
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Fri Mar 12, 2004 5:41 pm |
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| Where can I download La Te X? |
me |
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1855 |
Thu Mar 11, 2004 9:11 am |
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wingdeathscythe |
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1058 |
Wed Mar 10, 2004 1:52 am |
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| What’s dollar? |
Soarer |
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Sun Jan 18, 2004 3:46 pm |
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Math Forum • View forum – Junior Maths
Moderators: mathdb, YingYing
| [ 80 topics ] | Go to page 1, 2 Next |
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mathdb |
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439 |
Sun Sep 23, 2007 3:06 am |
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| ¡u¼Æ¾Ç¸ê®Æ®w¤â°O¡v¶©«±¥@¡I |
mathdb |
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459 |
Sun Sep 23, 2007 3:06 am |
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| combinatories |
billy |
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1124 |
Mon Apr 20, 2009 8:21 pm |
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| please help me |
cat |
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615 |
Sun Sep 21, 2008 10:14 am |
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| Defination of Rectangles |
CTall |
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509 |
Wed Sep 10, 2008 4:02 pm |
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| combinatorics… |
athena_lsy |
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910 |
Tue Oct 23, 2007 5:19 am |
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| Silent night, butter- fly… |
fungbenjamin |
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675 |
Fri Sep 21, 2007 12:52 am |
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| tangential circle |
sideattack |
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686 |
Fri Jul 13, 2007 2:43 pm |
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| 4_4 _4_4_4_4 = 500 (use “+” only) |
156156 |
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873 |
Sat Jun 02, 2007 12:01 pm |
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| Probability problem |
puremath |
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722 |
Tue Apr 17, 2007 3:28 am |
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| Combinatorics |
billy |
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793 |
Fri Mar 16, 2007 2:57 pm |
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| ¬°¤°»ò0¡I=1? |
dave12345 |
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869 |
Mon Oct 23, 2006 5:50 am |
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| MD Academic Seminar |
mathdb |
0 |
553 |
Wed Sep 27, 2006 5:35 am |
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| healp me please!about the divisibility! |
howarddb |
2 |
675 |
Thu Sep 21, 2006 8:07 am |
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| Online Maths Quiz For Young Children / Student |
ruby |
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611 |
Mon Sep 18, 2006 11:58 pm |
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| Pls help me to solve the problem Thx~~ |
1234567890 |
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682 |
Sun Sep 03, 2006 5:54 am |
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| Sudoku |
I.M. Mi |
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1256 |
Sun Aug 06, 2006 2:24 pm |
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| A faster way for division 1111/4? |
thacye |
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840 |
Wed Jul 19, 2006 3:47 pm |
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| About solution of triangles by the Sine Law and Cosine Law |
a,apple |
1 |
826 |
Tue Jul 11, 2006 10:25 am |
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| odd or even? |
monkey |
3 |
1137 |
Tue Jun 20, 2006 6:26 am |
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| The eye of squre~!Let think about it! |
GreatShun |
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825 |
Mon Jun 05, 2006 11:57 am |
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| Help! |
Elaine |
3 |
901 |
Mon Feb 20, 2006 5:28 pm |
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| Probability |
alphaboy |
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832 |
Thu Jan 26, 2006 2:36 pm |
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| Help~A silly question |
Crab sze |
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920 |
Tue Jan 17, 2006 5:49 am |
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| sor..a silly question(prove).. |
dimingc |
2 |
836 |
Thu Jan 12, 2006 12:27 pm |
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| Prove Cosine Law by Sine Law and Compound Angle Formulae |
tng4c |
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1328 |
Thu Dec 15, 2005 1:53 am |
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| solve theta |
tng4c |
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1087 |
Sun Dec 11, 2005 2:13 pm |
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| solution |
mathservant |
1 |
1117 |
Sun Dec 11, 2005 2:10 pm |
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| maxvalue |
mathquark |
4 |
1435 |
Sat Dec 10, 2005 5:16 pm |
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| set |
mmrproblem |
2 |
846 |
Mon Dec 05, 2005 8:13 am |
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| Probability |
alphaboy |
2 |
744 |
Sat Nov 05, 2005 2:37 pm |
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| Arithmetric Sequenceeeeee |
alphaboy |
2 |
757 |
Sun Oct 30, 2005 8:07 am |
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| Linear Programming |
alphaboy |
7 |
1111 |
Fri Oct 28, 2005 3:14 pm |
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| about ¹ï¼Æ |
jacklwk |
1 |
829 |
Thu Oct 27, 2005 4:54 am |
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| F.4 MATHS |
ysy25hk |
1 |
960 |
Sun Oct 16, 2005 11:27 am |
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| Inequilities |
alphaboy |
2 |
785 |
Sun Oct 16, 2005 6:59 am |
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| Proof without words |
I.M. Mi |
9 |
1626 |
Fri Oct 07, 2005 11:41 am |
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| find x |
ssupermath |
4 |
1086 |
Thu Sep 29, 2005 11:58 am |
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| pie |
dimingc |
2 |
1009 |
Tue Jun 21, 2005 3:07 am |
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| ABOUT PROBABILITY |
Physics Phoenix |
4 |
926 |
Wed Jun 08, 2005 5:06 pm |
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| Beauty Contest of Theorems |
mathdb |
0 |
689 |
Sat Jun 04, 2005 5:19 pm |
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| ¡u³Ì¬üªº¼Æ¾Ç©w²z¡v¿ïÁ| |
mathdb |
0 |
753 |
Sat Jun 04, 2005 5:12 pm |
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| Maths and Magic |
mathsteam |
2 |
928 |
Wed Jun 01, 2005 12:27 pm |
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| ¤p¾Çªñ¦üÈ°ÝÃD |
Venus |
1 |
986 |
Fri May 27, 2005 1:29 pm |
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| Exponent |
Soarer |
5 |
1202 |
Sun May 08, 2005 5:35 pm |
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| Results of Math Database Essay Competition are announced! |
Andy |
0 |
626 |
Sun May 01, 2005 3:42 pm |
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| ¼Æ¾Ç¸ê®Æ®w¼x¤å¤ñÁɵ²ªG¤½¥¬¤F¡I |
Andy |
0 |
828 |
Sun May 01, 2005 3:33 pm |
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| ½u»PÂI |
Pan-sonic |
2 |
984 |
Sat Apr 30, 2005 3:11 pm |
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| ¶ê§Î°ÝÃD |
kewell0401 |
3 |
1272 |
Wed Apr 13, 2005 3:56 pm |
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loklok4b12 |
1 |
936 |
Sat Apr 09, 2005 4:21 pm |
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| volume of a rhombus based pyramid |
bigKID |
5 |
1554 |
Wed Apr 06, 2005 4:03 am |
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| ¾÷·|²v |
loklok4b12 |
3 |
1333 |
Mon Apr 04, 2005 9:48 am |
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Math Forum • View forum – High School Maths
Moderators: mathdb, YingYing
| [ 354 topics ] | Go to page 1, 2, 3, 4, 5 … 8 Next |
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| The MD Blog is now open! |
mathdb |
0 |
481 |
Sun Sep 23, 2007 3:05 am |
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| ¡u¼Æ¾Ç¸ê®Æ®w¤â°O¡v¶©«±¥@¡I |
mathdb |
0 |
423 |
Sun Sep 23, 2007 3:05 am |
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| Topics | |||||
| Interactive math exersises web (www.emathematics.net) Fantas |
evagavila |
1 |
83 |
Fri Apr 03, 2009 6:10 pm |
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| Polynominal |
hawk_wing_1999 |
3 |
151 |
Thu Feb 26, 2009 12:57 am |
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| Maths Notes—-Functional Equations |
cyw00009 |
1 |
614 |
Sun Sep 21, 2008 12:49 pm |
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| Pure Math Polynomial |
whsvin |
1 |
491 |
Sun Sep 21, 2008 10:23 am |
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| Is the sup = 2? |
marco_dick |
12 |
306 |
Fri Sep 19, 2008 5:45 pm |
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| An inequality Question |
Ka-wing |
4 |
468 |
Mon Aug 25, 2008 4:58 am |
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| 初等數學筆記–同餘問題 |
Yan |
2 |
445 |
Sat Aug 23, 2008 8:22 am |
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| A problem from the American Math Monthly |
Alex |
1 |
421 |
Fri Aug 01, 2008 10:13 am |
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| series approximation of pi^3/32 |
twhung |
1 |
399 |
Sun Jul 27, 2008 4:21 am |
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| Problems on applied maths mechanics |
yikchunlau |
1 |
451 |
Sun Jul 20, 2008 7:26 am |
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| Urgent!!! Please Help Me |
adam2626hk |
1 |
370 |
Mon Jul 07, 2008 2:13 am |
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| One senior problem |
lungxo |
4 |
414 |
Sun Jun 22, 2008 11:54 pm |
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| Trigonometric expression |
hawk_wing_1999 |
1 |
425 |
Fri Jun 13, 2008 2:35 pm |
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| Complex no. problem |
hawk_wing_1999 |
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620 |
Thu May 29, 2008 2:40 pm |
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| a problem |
jeet |
1 |
341 |
Wed May 28, 2008 3:33 pm |
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| A difficult trigo. question |
hawk_wing_1999 |
3 |
386 |
Tue May 27, 2008 12:53 pm |
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| F.4 Amaths(M.I.) |
hawk_wing_1999 |
1 |
439 |
Fri May 23, 2008 11:47 am |
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| Integration of sec x |
hawk_wing_1999 |
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350 |
Sun May 18, 2008 4:33 pm |
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| Question about function & differentiation |
ericnging |
1 |
444 |
Wed May 07, 2008 4:07 pm |
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| alternating series |
Kit_1 |
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444 |
Sun Mar 02, 2008 12:09 pm |
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| MI |
s0410074 |
1 |
448 |
Wed Feb 27, 2008 4:18 pm |
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| Georg Cantor |
wafoowafu |
0 |
394 |
Wed Feb 27, 2008 9:50 am |
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| 不知中幾的inequality |
wammikamkam |
0 |
583 |
Sat Jan 05, 2008 4:04 pm |
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| “Maths Questions ＊ |
Jasmine0925 |
4 |
560 |
Sun Nov 25, 2007 5:08 am |
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| visualisation problem |
smallsnow1 |
2 |
387 |
Mon Nov 05, 2007 2:13 pm |
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| ¦³¥i¯à¦ýµL¾÷·|? |
emily chung |
20 |
6705 |
Tue Oct 23, 2007 12:38 am |
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| Matrix problem |
hawk_wing_1999 |
4 |
440 |
Sat Oct 20, 2007 6:07 am |
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| A Maths Question~ |
Jasmine0925 |
3 |
499 |
Wed Sep 26, 2007 4:18 pm |
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| STATISTICS —-3 |
scout12 |
0 |
468 |
Tue Jul 10, 2007 5:28 am |
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| STATISTICS —–HELP 2 |
scout12 |
0 |
435 |
Tue Jul 10, 2007 5:26 am |
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| STATISTICS —–HELP |
scout12 |
1 |
415 |
Sun Jul 08, 2007 4:33 am |
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| SSS,SAS,AAS,ASA,RHS外的全& |
disciple of Euclid |
0 |
481 |
Mon Jun 25, 2007 6:21 am |
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| 證明阿基米 |
disciple of Euclid |
0 |
447 |
Mon Jun 25, 2007 6:18 am |
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| 平行公理 :ӎ |
disciple of Euclid |
0 |
448 |
Mon Jun 25, 2007 6:16 am |
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| 對戴(德)金࠳ |
disciple of Euclid |
0 |
486 |
Mon Jun 25, 2007 6:13 am |
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| Geometric problem |
Michael |
5 |
1109 |
Tue Jun 05, 2007 8:59 am |
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| Is there such a polyhedron? |
ariesfan |
1 |
556 |
Mon May 28, 2007 4:35 pm |
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| How solve this problem |
lungxo |
1 |
617 |
Tue May 15, 2007 12:47 am |
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| HKCEE |
Michael |
2 |
991 |
Thu May 10, 2007 11:41 am |
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| Sum = Product |
pop |
2 |
716 |
Thu May 10, 2007 5:06 am |
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| 一個機率的 |
lungxo |
2 |
595 |
Thu May 10, 2007 12:28 am |
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| 過三關 |
sideattack |
2 |
642 |
Fri May 04, 2007 5:53 am |
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| ¡¦¼Æ¦C¨D©M¡¦¡¯ |
Erica |
2 |
895 |
Wed May 02, 2007 12:30 pm |
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| COMPLEX NUMBER help!!! |
神希 |
1 |
775 |
Sat Apr 14, 2007 4:57 pm |
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| How to solve this probability problem……….. |
puremath |
1 |
632 |
Thu Apr 12, 2007 12:09 pm |
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| Question about Sets |
little lamb |
1 |
644 |
Sun Mar 04, 2007 3:41 pm |
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| MI Question |
yiuaalan3178 |
2 |
835 |
Thu Nov 02, 2006 7:03 am |
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| MD Academic Seminar |
mathdb |
0 |
543 |
Wed Sep 27, 2006 5:34 am |
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| Help. Rate of change~ |
frog |
0 |
653 |
Wed Aug 23, 2006 12:06 pm |
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| Integration |
alphaboy |
1 |
852 |
Sat Aug 05, 2006 7:59 am |
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