Michael Freedman
Mathematician and academic
A prominent mathematician, specialized in topology and geometry. Contributed significantly to the understanding of 4-manifolds and was awarded the Fields Medal in 1986 for groundbreaking work in the field. Served as a professor at various institutions and was a leader in mathematical research.
Awarded the Fields Medal in 1986
Contributed to the understanding of 4-manifolds
Other People Born on April 21st
John Muir
Environmentalist and author of 'Our National Parks'
Born
April 21st, 1838 187 years ago
Died
December 24th, 1914 111 years ago — 76 years old
Born in Scotland and later moving to the United States, contributions to conservation and environmental activism began in the late 19th century. Established the Sierra Club in 1892, advocating for the preservation of wilderness areas in the United States. Writings included 'The Mountains of California' and 'Our National Parks', emphasizing the importance of natural landscapes. Instrumental in the creation of several national parks, including Yosemite and Sequoia. Efforts significantly influenced public opinion on environmental preservation.
Continue ReadingSimon de la Loubère
French mathematician and diplomat
Born
April 21st, 1642 383 years ago
Died
1729 296 years ago — 87 years old
A mathematician, poet, and diplomat, contributions included significant work in mathematics, particularly in the field of combinatorics and number theory. Served as a diplomat in the court of Siam, which involved intricate interactions between cultures. Authored several mathematical texts that combined poetic elements with rigorous mathematical formulations. His time as a diplomat was marked by keen observations of Siamese culture and rituals, documented in writings that provide historical insights into 17th-century Siam.
Continue ReadingArianne Hartono
Dutch tennis player and Grand Slam contender
Born
April 21st, 1996 29 years ago
Arianne Hartono is a professional tennis player from the Netherlands. Competing in women's singles and doubles, significant achievements include participation in major Grand Slam tournaments. Hartono gained recognition for her performances on the ITF Women's Circuit and the WTA Tour, showcasing a strong playing style and competitive spirit. Throughout the career, key victories in several tournaments highlighted her skill and determination on the court.
Continue ReadingJencarlos Canela
Singer-songwriter and actor
Born
April 21st, 1988 37 years ago
This American singer-songwriter and actor gained recognition for roles in the soap opera 'Más Sabe el Diablo' and the musical 'The Voice.' He has released several albums, including 'Empatía' and 'Aventura,' showcasing pop and Latin music styles. His career in entertainment began in the late 2000s, leading to further opportunities in both music and acting, including appearances in film and television.
Continue ReadingYoshito Usui
Japanese illustrator of Crayon Shin-chan
Born
April 21st, 1958 67 years ago
Died
September 11th, 2009 16 years ago — 51 years old
An illustrator and manga artist, gained prominence through the creation of the manga series Crayon Shin-chan, which debuted in 1990. The series follows the adventures of a mischievous five-year-old boy and reflects everyday life in a humorous manner. Usui's work led to adaptations in both animated television series and films, achieving widespread popularity in Japan and internationally. His distinctive drawing style and storytelling contributed to the series being recognized as a significant work in manga culture.
Continue ReadingXavi Simons
Dutch footballer and playmaker
Born
April 21st, 2003 22 years ago
Born in 2003, this Dutch footballer emerged as a prominent player in youth academies and later joined Paris Saint-Germain's senior team. The player gained recognition for technical skill and vision on the field. Following a successful stint at PSG, the player transferred to the Dutch club PSV Eindhoven. Contributed to the team by showcasing impressive performances in domestic leagues and European competitions.
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