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 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.

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!!

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 Mazenko | Campus MS |

Hannah Zhang | Fairview HS |

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 Zhang | Fairview HS |

Cynthia Lin | Fairview HS |

Avi Swartz | Fairview HS |

Kevin Wang | Fairview HS |

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.

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!

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!

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!

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.

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**!

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 |

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.

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 Zhang | Fairview HS |

Hannah Zhang | Fairview HS |

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!

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.

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

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!

We will be preparing for the 2016 ARML Competition throughout the year. In May 2015 forty-five students from nineteen different schools represented Colorado at the national competition. Colorado placed 20th in the U.S., out of 135 regional teams. Two team members placed among the top individuals 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.

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.