# "Mathematics for Everyone" Day, March 26, 2023

TIn the day event "Mathematics for everyone" included the 2nd "Mathematics Lectures and Essays on Hoang Tuy" contest in 2023, with 8 candidates participating. Specifically: 1) The figure has a symmetry axis, author Nguyen Thuy Viet Anh, Ischool International Integration School, Trieu Phong, Quang Tri; 2) Graph theory and notable structures, author Ha Trung, Le Hong Phong High School for the Gifted, Nam Dinh; 3) Lemma of two lines and some applications, author Nguyen Huu Tam, Le Quy Don High School for the Gifted, Binh Dinh; 4) The beauty of the counting method from the perspective of Fibonacci numbers, author Nguyen Tuan Anh, Nguyen Quang Dieu High School for the Gifted, Dong Thap; 5) A way to design math teaching in the direction associated with practice, author Pham Duc Quang, Hanoi National University of Education 2; 6) Integrating digital citizenship thinking in math lectures, author Nguyen The Minh, Vinschool Imperia High School, Hai Phong; 7) Unclear formula Euler, Nguyen Quang Minh, Bien Hoa, Dong Nai; and 8) The method of “O eating mandarin”, authors Ngo Quoc Chung, Nguyen Thi Hien, Hermann Gmeiner High School, Vinh, Nghe An. The first prize in the contest belonged to author Nguyen Huu Tam, Le Quy Don High School for the Gifted, Binh Dinh.

*Authors participating in the final contest*

*The jury evaluates the author's essay*

Also in the event "Mathematics for everyone", in the afternoon two public lectures were introduced to attendees, including:

1) Lecture: "Thresholds of discrete random structures" by Dr. Ngo Trung Hieu (Department of Number Theory, Institute of Mathematics, Vietnam Academy of Science and Technology). The lecture is designed to find answers to the questions: is the stochastic process truly random? What is probability? Can structure be found in random things?... In addition, the lecture also wants to introduce the outstanding ideas surrounding the Kahn-Kalai problem and the unique solution of Jinyoung and Pham Tuan Huy related to the thresholds selected for the appearance of structure in a random phenomenon.

2) Lecture: “The math behind artificial intelligence models” by Dr. Nguyen Quy Ha (CEO of Vingroup Big Data Research Institute, concurrently Product Director of VinBigData Joint Stock Company). The lecture introduces some basic mathematical concepts used as bricks to build modern artificial intelligence models: neural network architecture, loss function, optimization method. Besides, the lecture also suggests some open research directions that require rigorous mathematical theories.

*The jury took souvenir photos with the authors*

In parallel with the above activities are two contents throughout the day, including Fair and Book Exhibition of the Information and Documentation Center, Alpha Book; and Mathematical Moments poster exhibition, each poster is a short article about the applications of mathematics in the life around us.

Some pictures at the "Math for Everyone" day in 2023:

Translated by Quoc Khanh

Link to Vietnamese version