天狗食日(牛年首日)

from 5:15pm to 5:44pm
這是今天我家老弟
在麻坡家前拍的日偏蝕照片

数学竞赛(2)

C 国立数学竞赛

. 阿根廷

* OMA (Olimpíada Matemática Argentina)

. 澳大利亚

* AMC (http://www.amt.edu.au/ 澳大利亚数学竞赛)

* AMO (http://www.amt.edu.au/ 澳大利亚数学奥林匹克)

* ICAS-Mathematics (http://www.eaa.unsw.edu.au/about_icas/mathematics 国际竞赛和学校评估——数学，前称：澳大利亚学校数学评估)

* APMOPS (新加坡牙太地区小学数学竞赛http://www.hwachong.edu.sg/aphelion/apmops)

. 奥地利
* ÖMO (Österreichische Mathematik-Olympiade) (http://www.oemo.at/ )

. 比利时
* OMB (Olympiade Mathématique Belge)

* VWO (Vlaamse Wiskunde Olympiade)

. 巴西
* OBM (Olimpíada Brasileira de Matemática)

* Olimpíada Paulista

. 加拿大
数学和计算教育中心举办的国家竞赛:
完整解答:
* Euclid (12年级)

* Hypatia (11年级)

* Galois (10年级)

* Fryer (9年级)

多向选择:
* Fermat (11th grade students)

* Cayley (10th grade students)

* Pascal (9th grade students)

* Gauss (7th and 8th grade students)

National competitions hosted by The Mathematics Contest Centre:
Multiple Choice:
* Pythagoras Contest (6th grade students)

* Fibonacci Contest (5th grade students)

* Byron-Germain Contest (4th grade students)

Other competitions hosted by The Canadian Mathematical Society:
* COMC (Canadian Open Mathematics Challenge)

* CMO (Canadian Mathematics Olympiad)
MATHChallengers (formerly MathCounts BC) is called MathChallengers since 2005. It is hosted by APEGBC.

. 中国
* CMO (China Mathematics Olympiad)中国数学奥林匹克(又称全国中学生数学冬令营)

* CWMO (China Western Mathematics Olympiad)中国西部数学奥林匹克

* CSMO (China Southeast Mathematical Olympiad) 中国东南地区数学奥林匹克

* CGMO (Chinese Girls' Mathematics Olympiad) 中国女子数学奥林匹克

* CNMO (China National Mathematics Olympiad)分为全国初中数学联赛和全国高中数学联赛

. 塞浦路斯
* Κυπριακή Μαθηματική Ολυμπιάδα (Cyprus Mathematical Olympiad) - Mathematics competitions for
students in every grade.

* Επαρχιακοί Διαγωνισμοί Β΄ και Γ΄ τάξεων Λυκείων (Provincial Competitions for 2nd and 3rd grades of Lycea)

* Παγκύπριος Διαγωνισμος Λυκείου "Ζήνων" ("Zeno" Competition of Lyceum)

* Παγκύπριος Διαγωνισμος Α΄ Λυκείου "Πετράκης Γιάλλουρος" ("Petrakis Yallouros" Competition for 1st grade of Lyceum) - For students under 15.5 years old

* Παγκύπριος Διαγωνισμος Γ΄ Λυκείου "Ευαγόρας Παλληκαρίδης" ("Evagoras
Pallikarides" Competition for 3rd grade of high school) - For students under 15.5 years old

. 丹麦
* Georg Mohr (Contest for Danish high school students, see http://www.georgmohr.dk for more details [note: in Danish])

. 德国
* DeMO (Deutsche Mathematik-Olympiade, http://www.mathematik-olympiaden.de)

* BWM (Bundeswettbewerb Mathematik, http://www.bundeswettbewerb-mathematik.de), AIMO (Auswahlwettbewerb zur Internationalen Mathematik-Olympiade / Team selection tests for the IMO, http://www.bundeswettbewerb-
mathematik.de/imo/main.htm)

* LWMB (Landeswettbewerb Mathematik Bayern, http://lwmb.de/), LWM (Landeswettbewerb Mathematik Baden-Württemberg,
http://landeswettbewerb-mathematik.de/)

. 中国香港
* HKMO (香港数学竞赛，Hong Kong Mathematics Olympiad, links with past papers:
http://www.math.ied.edu.hk/main/activity/actlink.htm)

* HKMHASC (香港青少年数学精英选拔赛，The Hong Kong Mathematical High Achievers Selection Contest, for form 1 to 3
students, select students to the IWYMIC, Homepage in Chinese(flash): http://tyt.hkcampus.net/hkmhasc/)

* IMO HK Prelim (International Mathematical Olympiad Hong Kong Preliminary Selection Contest,
http://gifted.hkedcity.net/Gifted/IMO )

* Pui Ching Invitational Mathematics Competition 培正数学邀请赛(http://www.puichingcentre.edu.hk/pcimc/)

. 匈牙利
* Kalmár László Országos Matematika Verseny (3rd to 8th grade students)

* Kömal (a year-long contest, each month you have to submit solutions to some problems, 9th-12th grade, Homepage in
English: http://www.komal.hu/info/bemutatkozas.e.shtml )

* ADMV (Arany Dániel Matematika Verseny, 9th and 10th grade students)

* OKTV (Országos Középiskolai Tanulmányi Verseny, 11th and 12th grade)

* Kürschák József (first year university students or below)

. 希腊
* Θαλής (Thalis) - first round * Ευκλείδης (Efklidis) - second round * Αρχιμήδης (Archimidis) - third round

. 中国澳门
* Macao Mathematical Olympiad (Chinese homepage: http://www.sftw.umac.mo/~fstitl/olympiad/index.html )

. 墨西哥
* MMO (Mexican Mathematical Olympiad, http://www.imo2005.org/omm.htm )

. 荷兰
* NWO (Nederlandse Wiskunde Olympiade)

. 挪威
* Niels Henrik Abels matematikk-konkurranse (Norwegian Mathematical Olympiad, website available both in Norwegian and
English at http://www.math.uio.no/abelkonkurransen/ )

. 菲律宾
* Philippine Mathematics Olympiad

. 葡萄牙
* Portuguese Mathematics Olympiad - Olimpíadas Portuguesas da Matemática (in Portuguese)

* Olimpíada Paulistas (with Brazil)

. 斯洛伐克
* MO Matematická olymipáda http://matematika.webpark.sk

* STROM Korešpondenčné matematické semináre http://www.strom.sk/

* KMS Korešpondenčný matematický seminár http://kms.sk/

. 瑞典
* Skolornas matematiktävling (http://www.math.uu.se/~dag/skolornas.html or
http://www.math.chalmers.se/~sam/problemet/bok.html for older problems)

* Högstadiets matematiktävling (http://www.matematiktavling.org/hmt/, open for students in grades 7 through 9)

. 台湾
* Regional competition (http://umath.nuk.edu.tw/~senpengeu/HighSchool for some problems) 各地区数学竞赛.

* National competition (http://umath.nuk.edu.tw/~senpengeu/HighSchool for some problems) 全国数学竞赛.

* IMO selection and training camp. IMO 国手选训营及培训营.

. 英国

* Junior Maths Challenge

* Intermediate Maths Challenge

* Senior Maths Challenge (formerly National Maths Contest)

* British Mathematical Olympiad (http://www.bmoc.maths.org/)

. 美国

. 国家小学数学竞赛
* Mathematical Olympiads for Elementary and Middle Schools (MOEMS)

* OnlineMathLeague.com

. 国家中学数学竞赛
* OnlineMathLeague.com

* MathCounts

* Math League

* SIGMA

* Mathematical Olympiads for Elementary and Middle Schools (MOEMS)

* United States of America Mathematical Talent Search (USAMTS)

* American Mathematics Contest 8 (AMC->8), formerly the American Junior High School Mathematics Examination (AJHSME)

. 国家高中数学竞赛
* American Mathematics Contest 12 (AMC->12), formerly the American High School Mathematics Examination (AHSME)

* American Mathematics Contest 10 (AMC->10)

* American Invitational Mathematics Examination (AIME)

* United States of America Mathematical Olympiad (USAMO)

* United States of America Mathematical Talent Search (USAMTS)

* American Regions Mathematics League (ARML)

* Mandelbrot Competition

* Math League

* Mu Alpha Theta

* Fall Startup Event

* Team Scramble

* Ciphering Time Trials

* Four-by-Four Competition

* Collaborative Problem-Solving Contest

. 国家大学数学竞赛

* William Lowell Putnam Mathematical Competition * AMATYC Mathematics Contest

数学竞赛(1)

A 国际数学竞赛

* IMO (国际数学奥林匹克(International Mathematical Olympiad)) -- 全球范围

* IMC (国际大学生数学竞赛(International Mathematics Competition for University Students)) [1]

* PMWC (小学数学国际比赛) -- 全球范围

B 区域数学竞赛

* SEAMO (东南亚数学奥林匹克(SEAMEO Mathematics Olympiad)) -- 东南亚

* APMO (亚太数学奥林匹克(Asian-Pacific Mathematics Olympiad)) -- 太平洋周边地区

* OIM (伊比利亚数学奥林匹克(Olimpíadas Iberoamericanas de Matemática)) -- 西班牙，葡萄牙和拉丁美洲

* 中美洲及加勒比海数学奥林匹克(Olimpiada Matematica de Centroamérica y del Caribe) -- 中美洲及加勒比海

* 南方共同市场数学奥林匹克 Olimpiada Matematica de Paises del Cono Sur -- 南美8国

* 波罗的海数学奥林匹克(Balkan Mathematical Olympiad) -- 15.5岁以上波罗的海地区学生

* 少年波罗的海数学奥林匹克(Junior Balkan Mathematical Olympiad) -- 15.5岁以下波罗的海地区学生

* 帕特南数学竞赛(William Lowell Putnam Mathematical Competition) -- 美国和加拿大(http://www.maa.org/awards/putnam.html )

* 波罗的之路(Baltic Way) -- 波罗的海国家.

* 青少年数学国际城市邀请赛 IWYMIC (Invitational World Youth Mathematics Inter-city Competition) -- 东亚地区青少年中学生
(http://www.nknu.edu.tw/~math/kiwymic/index.htm )

* 亚洲城际少年数学奥林匹克 AITMO (Asian Inter-city Teenagers Mathematics Olympiad) -- 东亚地区青少年中学生