Rosemberg Toala-Enríquez was born and raised in Chiapas, Mexico. From a young age, he had a strong
interest in puzzles and games. His mother, a secondary school math teacher, encourage him to
participate in the Math Olympiads, starting at the age of 11. From this point onwards, Rosemberg would
never abandon this mathematical path. Rosemberg went on to participate in several international
competitions, including the Mathematics World Contest in Hong Kong in 1999, the Olimpiada Rioplatense
in Argentina in 2000 and 2002, the Olimpiadas de Matemáticas de Centroamérica y el Caribe in Costa
Rica in 2002, and the International Mathematical Olympiad in Greece in 2004.

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After finishing high school, Rosemberg moved across various locations to pursue a career in
mathematics. He first relocated to Guanajuato to earn a bachelor’s degree in Mathematics from the
Universidad de Guanajuato/CIMAT. He then moved to Mexico City, where he obtained an M.Sc. in
Mathematics from the Universidad Nacional Autónoma de Mexico. He obtained his Ph.D. in Mathematics
from the University of Warwick in the UK. The graduate degrees were supported by CONACyT
fellowships from Mexico. After completing his Ph.D., Rosemberg returned to Chiapas for three years to
teach mathematics at the Universidad Autónoma de Chiapas. He then spent another period in the UK
working at De Montfort University. Currently, he is an Assistant Professor and Director of the Outreach
program at George Mason University.

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Rosemberg’s research is centered on extremal combinatorics. He employs techniques from graph theory
and topology to explore questions such as: given a fixed parameter, what configuration will minimize or
maximize another parameter?

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Inspired by the profound impact mathematics has had on his life, Rosemberg is passionate about making
math accessible and enjoyable for a broader audience. In his role as Outreach Director at George Mason
University, he fulfills this mission by visiting schools, libraries, and other organizations to deliver
interactive workshops for students of all ages.

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Since 2009, Rosemberg has been a dedicated supporter of the Math Olympiad in Chiapas, contributing in
various roles, including organizing the competition, training students, designing exams, developing
resources, and leading workshops for teachers. He firmly believes that math competitions are powerful
tools to guide students toward STEM fields and elevate educational standards, especially in Chiapas.

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“To me, Hispanic Heritage Month is about visibility and recognition. It's important to highlight the
contributions of Hispanics in roles not typically associated with this community. The Lathisms calendar
provides valuable insights into the diverse backgrounds and current work of Hispanic individuals, serving
as an inspiration for others to explore careers in STEM fields.”

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