During the last Pi Day, the CRM served up a mathematical challenge addressed at students from the UAB Faculty of Science and Biosciences.
Every March 14th (3/14 in the month/day format) mathematicians and math enthusiasts all over the world celebrate Pi Day, named after the constant (known by the Greek letter “π”) that represents the ratio of a circle’s circumference to its diameter and its fascinating history. The date, which also commemorates Albert Einstein’s birth date and was the day Stephan Hawking died, was designated in 2019 by UNESCO as the International Day of Mathematics.
The day was first celebrated in 1988 at San Francisco’s Exploratorium, started by physicist Larry Shaw. Traditions for Pi Day include eating pie (pun very much intended due to the fact that “pi” and “pie” are homophones in English /paɪ/) and reciting from memory the decimals of the number π (if you want a crack at the record, the current Guinness World Record is held by Rajveer Meena of India, who, in 2015, recited 70.000 digits of Pi). This year the CRM joined the celebration with a mathematical challenge aimed at the student community here at the UAB Science and Biosciences Faculty, launched on the same day via the CRM’s social networks, with prizes for the first three people to bring us the correct solutions.
You go on a beach holiday, but you get bored and your mathematician friend helps you with a problem. She/He gives you two empty buckets, one with a capacity of 3/4 L of water and the other with a capacity of π / 4 L of water. He then asks you how you would end up with a bucket containing 1/4 L of water with an error of less than 1%? How many water transfers do you need to get what she/he has asked for?
Three students (two form mathematics and one from biology) got the solution right and claimed their reward.
In praise of Pi
Pi is an irrational number, which means that it cannot be represented as a fraction, and its digits go on forever with no recurring patterns. This means that Pi is infinite, and its exact value can never be calculated (an approximation such as 3.14 or 22/7 is often used for everyday calculations). Currently, about 62.8 million digits of Pi have been discovered, with a group of researchers from the University of Applied Sciences of the Grisons in Switzerland holding the record.
The Pi number has been known for almost 4.000 years, since the times of ancient civilizations such as the Egyptians and Babylonians. The first calculation of π was done by Archimedes of Syracuse (287–212 BC), one of the greatest mathematicians of the ancient world. Over the ensuing centuries, Chinese, Indian, and Arab mathematicians extended the number of decimal places known through tedious calculations, rather than improvements on Archimedes’ method. It was not until 1706, however, that the Greek π letter was used to identify the number, with Philologist William Jones first using the symbol. Later on, it was Leonhard Euler who popularized the use of the symbol among the scientific community in 1737.
Famous mathematicians such as Fibonacci, Newton, Leibniz, and Gauss, have worked on the number, calculating its digits and using it in numerous areas of mathematics.
CRM Comm Team
Anna Drou | Paula Lomascolo | Pau Varela
Eva Miranda, a Full Professor at the Universitat Politècnica de Catalunya and affiliated researcher at CRM, has been invited to give a lecture in the Nachdiplom series at ETH Zurich. Her lecture, titled “Singular Symplectic Manifolds,” is scheduled for the fall of 2025 and is expected to delve into the intricacies of this complex topic, a subject she has extensively researched since 2009.
The Centre de Recerca Matemàtica (CRM) welcomes a dynamic group of members, including Jordi Castellví in Combinatorics, Mariona Fucho Rius as the new Scientific Comm Officer, Alexandre Garcia-Duran in Neuroscience, Pablo Nicolás in Algebra and Geometry, Amaia Vielba in Computational Biology, and Søren István Adorján Dyhr in fluid dynamics. Each brings a unique blend of expertise and interdisciplinary focus, enhancing CRM’s research landscape in mathematics and its applications.
Xavier Ros Oton, ICREA Research Professor, Full Professor at the University of Barcelona, and affiliated researcher at CRM, has been awarded a Consolidator Grant by the European Research Council to develop a project on Partial Differential...
The Centre de Recerca Matemàtica (CRM) and the Institut de Ciències del Mar (ICM) organised a 4-day event to explore new ways to collaborate both at the research and institutional levels.
Josep Sardanyés, investigador principal del grup de Biologia Matemàtica i Computacional , va impartir una xerrada divulgativa sobre la teoria del caos a estudiants de tercer i quart d’ESO de l’Institut Pla Marcell (Cardedeu) amb el títol “Què és el caos?”.
Durant la Setmana de la Ciència, el Centre de Recerca Matemàtica (CRM) va organitzar dues activitats de divulgació per destacar la interdisciplinarietat de la recerca matemàtica, amb una jornada de portes obertes amb xerrades sobre neurociència, la...
Subscribe for more CRM News
Subscribe to our mailing list to get the lastest information about CRM activities.