arml team 2015

euler group

Euler Group
Saturday, January 28, 2017
2:00-5:00 pm


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, and geometry.

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. (Note: Younger students should wait until ninth grade before attending, even if they are currently studying high school or college level math.)

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, combinatorics, and the pigeonhole principle. The Galois MATHCOUNTS club will meet on Wednesday afternoons at CU-Boulder to practice contest math problems. (More details here.) Recommended background: high school algebra. (Note: Younger 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 2016–17 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 2016

Congratulations to the Colorado ARML A1 Team which just returned from the 2016 ARML competition! They placed 30th nationally out of 131 teams and 5th in the western division.

Special congratulations to Hongyi Chen of Fairview HS who qualified for the individual tiebreaker round and placed 12th out of almost 2000 participants from around the country!

May 2016

Congratulations to Hongyi Chen of Fairview HS who has been named one of the top 12 winners of the 2016 USA Mathematical Olympiad! Congratulations to Avi Swartz of Cherry Creek HS who has been invited, along with Hongyi, to attend the Mathematical Olympiad Summer Program (MOSP)!

In 2016, 140,000 U.S. students participated in the American Mathematics Competitions (AMC) 10/12 exams which lead to the selection of the U.S. IMO (International Mathematical Olympiad) team. Only the top 50-60 students who write the USA Mathematical Olympiad or USA Junior Mathematical Olympiad are invited to attend MOSP, the U.S. IMO training camp.

The last time two Colorado students qualified for this select program was in 2008. Congrats to Hongyi and Avi!

April 2016

The Colorado Math Circle has won first place in the 2015-2016 ARML Power Contest! This is the first time we have won the contest after placing among the top seven teams for ten consecutive years. Congratulations to all who participated!!

April 2016

Congratulations to the math circle members who qualified for the 2016 USA Mathematical Olympiad (USAMO):

Hongyi Chen Fairview HS
Anurag Golla Fairview HS
Avi Swartz Cherry Creek HS
Andrew Ying Cherry Creek HS

and USA Junior Mathematical Olympiad (USAJMO):

Austen MazenkoCampus MS
Hannah Zhang Fairview HS

February 2016

The winners of the Open Round of the 2016 NACLO (North American Computational Linguistics Olympiad) have been announced. The contest, which took place on January 28, attracted close to 2000 participants in the U.S. and Canada. Congratulations to

Hannah ZhangFairview HS
Cynthia LinFairview HS
Avi SwartzFairview HS
Kevin WangFairview HS
who ranked among the top 10% and advanced to the NACLO Invitational Round!

December 2015

The Colorado Math Circle is tied for third place after Round 1 of the 2015-2016 ARML Power Contest. Congratulations to all participants! Round 2 of this team contest will take place in February.

November 2015

Congratulations to Casey Zhang of Fairview High School who will be one of ten finalists participating in the 2016 Who Wants to Be a Mathematician competition! The national contest will take place in January at the Joint Mathematics Meetings in Seattle. Best of luck to Casey!

September 2015

Congratulations to Christine Soh and Andrea Lin of Fairview High School for their excellent performance in the 2015 Math Prize for Girls competition! Christine placed among the top students and qualified for the Math Prize for Girls Olympiad in November. Andrea scored just below honorable mention. Congrats to both!

Older news entries …

bulletcolorado arml

We will be preparing for the 2017 ARML Competition throughout the year. In June 2016 thirty-seven students from sixteen different schools represented Colorado at the national competition. Colorado placed 30th in the U.S., out of 131 regional teams. One team member placed 12th among 2000 participants in the competition. 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, Department of Mathematics, and the Rocky Mountain Section of the Mathematical Association of America (MAA). Previous supporters of the math circle include the CU Outreach Committee.

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.