arml team 2015

Interested in broadening your mathematical knowledge and sharpening your analytical thinking? Join the Colorado Math Circle for exciting math talks and problem solving sessions hosted by the University of Colorado at Boulder. Speakers will include math professors and mathematicians from around the state. Topics are expected to include number theory, combinatorics, probability, geometry, and group theory.

The Euler Group is intended for advanced high school students. It will meet throughout the year to work on problem solving, focusing on topics outside the standard math curriculum. Past topics have included cyclotomic polynomials, knot theory, computability theory, and dynamical systems.

The Galois Group is intended for advanced middle school students. It will meet throughout the year to work on problem solving. Past topics have included modular arithmetic, Catalan numbers, recursion, and pigeonhole principle. The Galois MATHCOUNTS club will meet on Wednesday afternoons at CU-Boulder to practice contest math problems. Recommended background: high school algebra. (Grade school students should wait until sixth grade before attending, even if they are currently studying middle or high school math.)

You may attend any meeting without pre-registering but if you would like to add your name to the Colorado Math Circle mailing list, please complete this registration form.


Check our calendar for the 2015–16 meeting schedule.


Meetings will take place in the CU-Boulder Engineering Center or Duane Physics Building or Benson Earth Sciences Building. (See driving directions.) The classroom location will change from month to month so please check our calendar for the correct room number.

math circle news

June 2015

The Colorado ARML A1 Team placed 20th overall at the 2015 ARML Competition, out of 135 fifteen-member regional teams from around the country. Special congratulations to Jesse Zhang of Fairview HS and Avi Swartz of Cherry Creek HS who ranked among the top individuals in the competition and qualified for the tiebreaker round!

May 2015

Congratulations to Hongyi Chen of Fairview High School who was named one of the winners of the 2015 USA Junior Mathematical Olympiad (USAJMO)! He qualifies for the Mathematical Olympiad Summer Program (MOSP) which trains and selects members of the U.S. Olympiad Team.

May 2015

Congratulations to the Euler Quads team (Hongyi Chen, Lubin Deng, Kristine Guo, T.J. Leing, and Casey Zhang) which won first place in the high school mixed team division of the 2015 Purple Comet! Math Meet!

April 2015

Congratulations to the math circle members who qualified for the 2015 USA Mathematical Olympiad (USAMO):

Jesse Zhang Fairview HS

and USA Junior Mathematical Olympiad (USAJMO):

Hongyi Chen Fairview HS
Avi Swartz Cherry Creek HS
Aaron Lou Highlands Ranch HS

March 2015

The Colorado Math Circle tied for seventh place in the 2014-2015 ARML Power Contest. This is the tenth consecutive year we have ranked among the top seven teams overall.

March 2015

Congratulations to the math circle members who have been named winners in the Open Round of the 2015 North American Computational Linguistics Olympiad (NACLO)! The contest attracted more than 2000 participants in the U.S. and Canada. The top winners advance to the four-hour Invitational Round.

Jesse ZhangFairview HS
Hannah ZhangFairview HS

January 2015

The Rocky Mountain Section of the Mathematical Association of America (MAA) has awarded the Colorado Math Circle a Section Activity Grant. Many thanks to the MAA!

December 2014

The Colorado Math Circle is tied for 4th place, just one point behind the 1st place teams, after Round 1 of the 2014-2015 ARML Power Contest. Congratulations to everyone who participated! Round 2 will take place in February.

December 2014

The Boulder Daily Camera visited the Euler Group Puzzlepalooza and published an article about the contest.

September 2014

Congratulations to Nina Vendhan, Casey Zhang and Christine Soh for their results in the 2014 Math Prize for Girls competition!

Nina Vendhan of Kent Denver School tied for second place overall, winning $7500. Casey Zhang of Fairview HS won honorable mention and Christine Soh of Fairview HS scored just below honorable mention. Congrats to all three!

Older news entries …

bulletcolorado arml

We will be preparing for the 2015 ARML Competition throughout the year. In June 2014 thirty-nine students from twenty different schools represented Colorado at the national competition. Colorado placed 28th in the U.S., out of 145 regional teams. Twice the Colorado team has won national honors: placing first in the B division in 2006 and placing sixth in the B division in 2011. Three times Colorado students have ranked among the top ten individuals in the competition.

Read more …


We are fortunate to be supported by the CU-Boulder Department of Applied Mathematics and Department of Mathematics. Previous supporters of the math circle include the CU Outreach Committee and the Rocky Mountain Section of the Mathematical Association of America (MAA).

If you would like to make a tax-deductible donation to the Colorado Math Circle, please visit our donations page. Thank you for your support!

See our FAQ for answers to frequently asked questions.