In geometry, an equilateral triangle is a triangle in which all three sides have the same length. In the familiar Euclidean geometry, an equilateral triangle is also equiangular; that is, all three internal angles are also congruent to each other and are each 60°. It is also a regular polygon, so it is also referred to as a regular triangle.
Shing-Tung Yau is a Chinese-American mathematician. He is the director of the Yau Mathematical Sciences Center at Tsinghua University and Professor Emeritus at Harvard University. Until 2022 he was the William Caspar Graustein Professor of Mathematics at Harvard, at which point he moved to Tsinghua.
Dušan D. Repovš is a Slovenian mathematician from Ljubljana, Slovenia.
The Canadian Mathematical Society is an association of professional mathematicians dedicated to the interests of mathematical research, outreach, scholarship and education in Canada. It serves the national community through the publication of academic journals, community bulletins, and the administration of mathematical competitions.
Dan Pedoe was an English-born mathematician and geometer with a career spanning more than sixty years. In the course of his life he wrote approximately fifty research and expository papers in geometry. He is also the author of various core books on mathematics and geometry some of which have remained in print for decades and been translated into several languages. These books include the three-volume Methods of Algebraic Geometry, The Gentle Art of Mathematics, Circles: A Mathematical View, Geometry and the Visual Arts and most recently Japanese Temple Geometry Problems: San Gaku.
In mathematics, convex geometry is the branch of geometry studying convex sets, mainly in Euclidean space. Convex sets occur naturally in many areas: computational geometry, convex analysis, discrete geometry, functional analysis, geometry of numbers, integral geometry, linear programming, probability theory, game theory, etc.
Murray Seymour Klamkin was an American mathematician, known as prolific proposer and editor of professionally-challenging mathematical problems.
Toshikazu Sunada is a Japanese mathematician and author of many books and essays on mathematics and mathematical sciences. He is professor emeritus of both Meiji University and Tohoku University. He is also distinguished professor of emeritus at Meiji in recognition of achievement over the course of an academic career. Before he joined Meiji University in 2003, he was professor of mathematics at Nagoya University (1988–1991), at the University of Tokyo (1991–1993), and at Tohoku University (1993–2003). Sunada was involved in the creation of the School of Interdisciplinary Mathematical Sciences at Meiji University and is its first dean (2013–2017). Since 2019, he is President of Mathematics Education Society of Japan.
Ross Honsberger (1929–2016) was a Canadian mathematician and author on recreational mathematics.
Ravi P. Agarwal is an Indian mathematician, Ph.D. sciences, professor, professor & chairman, Department of Mathematics Texas A&M University-Kingsville, Kingsville, U.S. Agarwal is the author of over 1000 scientific papers as well as 30 monographs. He was previously a professor in the Department of Mathematical Sciences at Florida Institute of Technology.
Charles Stanley Ogilvy (1913–2000) was an American mathematician, sailor, and author. He was a professor of mathematics at Hamilton College, and a frequent competitor at the Star World Championships. His many books include works on both mathematics and sailing.
Edward Mann Langley was a British mathematician, author of mathematical textbooks and founder of the Mathematical Gazette. He created the mathematical problem known as Langley’s Adventitious Angles.
Kurt Schiffler was a German engineer, entrepreneur, inventor and amateur geometer.
Aequationes Mathematicae is a mathematical journal. It is primarily devoted to functional equations, but also publishes papers in dynamical systems, combinatorics, and geometry. As well as publishing regular journal submissions on these topics, it also regularly reports on international symposia on functional equations and produces bibliographies on the subject.
Erwin Lutwak, is a mathematician. Lutwak is professor emeritus at the Courant Institute of Mathematical Sciences at New York University in New York City. His main research interests are convex geometry and its connections with analysis and information theory.
John Frankland Rigby was an English mathematician and academic of the University College of South Wales, Cardiff, when it was part of the University of Wales, and of its successor Cardiff University.
Kseniya Garaschuk is a Soviet-born Canadian mathematician and mathematics educator. She is an associate professor of mathematics and statistics at the University of the Fraser Valley, and the editor-in-chief of the mathematics journal Crux Mathematicorum.
Gaoyong Zhang is an American mathematician. He is professor at the Courant Institute of Mathematical Sciences at New York University in New York City. His main research interests are convex geometry and its connections with analysis and information theory.
The Anneli Lax New Mathematical Library is an expository monograph series published by the Mathematical Association of America (MAA). The books in the series are intended for a broad audience, including undergraduates, advanced high school students, the general public, and teachers. The American Mathematical Society (AMS) makes available the AMS/MAA Press Archive eBook Collection featuring several MAA book series, including the Anneli Lax New Mathematical Library.
