John Landen

Mathematician known for Landen's theorem

John Landen - Mathematician known for Landen's theorem
Born

January 23rd, 1719
306 years ago

Died

January 15th, 1790
235 years ago — 70 years old

Category

Thinkers & Philosophers

Country

England

Links & References

An English mathematician and theorist, contributed significantly to the fields of mathematics and geometry. Formulated Landen's theorem, which concerns the transformation of integrals. Worked on various mathematical topics including the theory of elliptic integrals and the evaluation of logarithmic functions. Authored several papers that influenced later developments in mathematical analysis.

Formulated Landen's theorem

Contributed to the theory of elliptic integrals

Published key papers in mathematical analysis

Other People Born on January 23rd

Muthu Coomaraswamy

Sri Lankan lawyer and politician
Born
January 23rd, 1833 192 years ago
Died
1879 146 years ago — 46 years old

Born in 1833, a prominent figure in Sri Lanka's legal and political landscape. Served as the first Ceylonese to be appointed as a judge in the Supreme Court of Ceylon. Played a key role in advocating for social reforms and the rights of the local population during colonial rule. Contributed significantly to the legal profession and public service in the country, influencing future legislation and governance.

Continue Reading

Ruben Loftus-Cheek

Professional footballer, Chelsea FC
Born
January 23rd, 1996 29 years ago

A professional footballer played as a midfielder. Developed through the youth system at Chelsea FC, debuted for the senior team in 2014. Had loan spells at Crystal Palace and Fulham, contributing to their campaigns in the Premier League. Represented the England national team, including participation in the 2018 FIFA World Cup.

Continue Reading

Mariska Hargitay

Television actress and producer from Law & Order
Born
January 23rd, 1964 61 years ago

An accomplished actress and producer, notable work includes a lead role in the long-running television series 'Law & Order: Special Victims Unit', portraying the character Olivia Benson since 1999. Under her role, significant contributions to the series included directing episodes and producing. The character gained recognition for addressing issues related to sexual assault and domestic violence, which resonated with audiences worldwide. Hargitay's performance earned critical acclaim and numerous accolades over the years.

Continue Reading

Jonatha Brooke

Singer-songwriter and guitarist, '10 Cent Wings'
Born
January 23rd, 1964 61 years ago

A singer-songwriter and guitarist, recognized for a blend of folk and rock music. Released several albums, including '10 Cent Wings' and 'Steady Pull'. Collaborated with various artists and contributed songs to prominent film soundtracks. Active in music education, she has taught songwriting at universities and workshops. Known for engaging live performances, she toured extensively and built a dedicated following.

Continue Reading

Alan Cheuse

Writer and literary critic; 'The Missed',
Born
January 23rd, 1940 85 years ago
Died
July 31st, 2015 9 years ago — 75 years old

A writer and literary critic contributed to various publications and taught creative writing at several universities. Achieved prominence as a novelist with works such as 'The Missed' and wrote fiction and essays that explored the complexities of human experience. Served as a book commentator on National Public Radio, reaching a wide audience with insightful reviews and recommendations. In addition, worked as a professor of creative writing, influencing a generation of writers through mentorship and education.

Continue Reading

Arnoldo Alemán

Nicaraguan politician and president
Born
January 23rd, 1946 79 years ago

Served as the President of Nicaragua from 1997 to 2002. Worked as a lawyer before entering politics, initially obtaining a seat in the National Assembly. Oversaw various reforms during presidency, including infrastructure projects and economic initiatives. Faced controversy and allegations of corruption, which led to legal battles post-presidency. Remained an influential figure in Nicaraguan politics after leaving office.

Continue Reading

Other People Who Died on January 15th

Carlo Fruttero

Italian journalist and author, editor
Born
1926 99 years ago
Died
January 15th, 2012 13 years ago — 86 years old

An Italian journalist and author, contributed extensively to literature and journalism in Italy. Worked as an editor and wrote numerous novels, essays, and articles. Partnered with another prominent writer to produce several successful works. Many publications featured insights on culture and society, reflecting contemporary issues during the time. Achieved recognition for integrating genres in storytelling, blending elements of mystery and satire.

Continue Reading

Ray Nagel

American football player and coach
Born
May 18th, 1927 97 years ago
Died
January 15th, 2015 10 years ago — 87 years old

Played football at the University of Iowa and served as a quarterback before entering the coaching profession. Coached teams including the University of Utah and the University of Hawaii. Held a position as head coach at the University of Hawaii from 1970 to 1972. Contributed to player development and team strategies throughout coaching career.

Continue Reading

Linda Nolan

Irish singer and actress, The Nolans
Born
February 23rd, 1959 66 years ago
Died
January 15th, 2025 0 years ago — 65 years old

A prominent figure in the Irish entertainment scene, this singer and actress gained fame as a member of the music group The Nolans, which was active from the 1970s. The group achieved significant success with hits throughout Europe and beyond. In addition to her music career, she appeared in various television programs and stage productions, showcasing her talents in both acting and singing. The Nolans were particularly popular in the UK, and their contributions to pop music were recognized with numerous performances and public appearances.

Continue Reading

Berengaria of Barcelona

Queen consort of Castile
Born
1116 909 years ago
Died
January 15th, 1149 876 years ago — 33 years old

Married to Alfonso VII, Berengaria served as queen consort of Castile during the 12th century. This union strengthened political alliances within the Iberian Peninsula. Berengaria's lineage established connections between the crowns of Castile and Barcelona. She bore several children, contributing to the dynastic succession in the region. After her husband's death, she played a role in the governance of the realm until her own passing.

Continue Reading

Lincoln Verduga Loor

Ecuadorian journalist and politician
Born
December 25th, 1917 107 years ago
Died
January 15th, 2009 16 years ago — 91 years old

Journalism career included contributions to various media outlets in Ecuador. Held the position of a member of the National Assembly, focusing on legislative matters. Advocacy for democracy and freedom of speech defined political efforts. Passed away on January 15, 2009.

Continue Reading

Dolores O'Riordan

Irish pop singer and The Cranberries lead
Born
September 6th, 1971 53 years ago
Died
January 15th, 2018 7 years ago — 46 years old

An influential Irish pop singer achieved prominence as the lead vocalist of the band The Cranberries. The group gained international fame in the 1990s with hit songs such as 'Zombie' and 'Linger'. O'Riordan's distinctive voice and emotive songwriting contributed to the band's success, making them a significant presence in the alternative rock music scene. Beyond her work with The Cranberries, she also released solo albums, showcasing her versatility and artistic growth. The band reunited several times over the years, continuing to tour and release new music. O'Riordan's career was marked by both commercial success and critical acclaim until her untimely passing in 2018.

Continue Reading