Peter Gustav Lejeune Dirichlet
German mathematician and academic

Born
February 13th, 1805
220 years ago
Died
May 5th, 1859
165 years ago — 54 years old
Category
Scientists & Innovators
Country
Germany
Links & References
Contributed significantly to number theory, analysis, and mathematical physics. Introduced Dirichlet's theorem on arithmetic progressions, which established conditions for prime numbers in specific sequences. Developed the concept of a Dirichlet series and made advances in the study of functions, particularly Dirichlet conditions. Served as a professor at the University of Göttingen for many years, influencing future generations of mathematicians.
Introduced Dirichlet's theorem on arithmetic progressions
Developed Dirichlet series in number theory
Contributed to the study of mathematical functions
Other People Born on February 13th
Kate Roberts
A prominent author and activist from Wales. Wrote extensively in both Welsh and English, focusing on themes relating to social issues and the Welsh identity. Contributed significantly to the field of literature, particularly in the early to mid-20th century. Engaged in various activist efforts, particularly concerning the rights and representation of the Welsh language. Received several accolades for literary work, influencing future generations of writers.
Continue ReadingHarold Mahony
Born in 1867, a tennis player competed in the late 19th century. Achieved significant recognition by winning the men's doubles title at Wimbledon in 1896 alongside partner Joshua Pim. The victory marked a key achievement in his career. Participated in various tennis competitions during a time when the sport was rapidly gaining popularity. Contributed to the development of tennis in Scotland and Ireland through participation in national events and tournaments.
Continue ReadingJean-François Lisée
A prominent Canadian journalist and politician, held various roles in government and media. Worked as the Minister of Intergovernmental Affairs in Quebec and served as a member of the National Assembly. Engaged in journalism, producing significant written work that analyzed political issues. Contributed to discussions on Quebec sovereignty and politics through various publications and public speaking engagements.
Continue ReadingMarian Dawkins
A prominent biologist focused on the welfare of animals, this individual contributed significantly to understanding animal cognition and behavior. The career included positions at renowned institutions, where research emphasized the importance of welfare in domestic and wild animals. Engaged in educating both the public and academics, the work highlighted ethical considerations in animal treatment. Publications included influential papers and books that shaped contemporary discussions on animal rights and welfare.
Continue ReadingBess Truman
Served as First Lady from 1945 to 1953 during the presidency of husband Harry S. Truman. Actively engaged in social issues, focusing on veterans' welfare and supporting the arts. Played a significant role in the establishment of the Harry S. Truman Library and Museum in Independence, Missouri. Maintained a keen interest in the role of the press and the importance of communication between the presidency and the public.
Continue ReadingHartmann Schedel
Born in 1440, this physician contributed significantly to the field of medicine and historiography. Renowned for creating the Nuremberg Chronicle, one of the earliest printed books containing illustrations and historical accounts, it provided a comprehensive history of the world from a religious perspective. The work showcased advancements in printing technology, enhancing the dissemination of knowledge during the late 15th century. He studied at the University of Leipzig and worked in various cities including Nuremberg, where his scholarly pursuits flourished.
Continue ReadingOther People Who Died on May 5th
Henry Sidney
Served as Lord Deputy of Ireland during the late 16th century. Played a significant role in the governance of Ireland under English rule. His tenure focused on the management of rebellious factions and the establishment of order within the region. Engaged in efforts to reinforce English authority and improve relations with the Irish nobility. After his departure, his contributions to the English administration in Ireland continued to influence subsequent policies.
Continue ReadingHugo Banzer
Serving as a general in the Bolivian military, held the position of President of Bolivia from 1971 to 1978 and again from 1997 to 2001. During the first term, implemented policies aimed at economic development and modernization while facing significant political challenges. His regime is characterized by the declaration of a nationalist agenda and repression of opposition forces. The return to power in 1997 marked a significant phase in Bolivia's democratic transition post-coup. Efforts to revitalize the economy continued, amidst ongoing social issues and civil unrest.
Continue ReadingClifton Hillegass
Founded CliffsNotes, a series of study guides that simplify classic literature and academic subjects, influencing education across the United States. The concept originated from a desire to aid students in understanding complex texts. These study aids became widely used by students for exam preparation and classwork assistance. CliffsNotes became synonymous with literature study guides, eventually expanding into various subjects and educational resources. The brand maintained a prominent presence in American education for decades.
Continue ReadingJeannie Epper
An accomplished stuntwoman and actress, contributions spanned several decades in the film industry. Gained recognition for work in various action films including ‘The Terminator’ and ‘Die Hard’. Participated in high-profile productions, showcasing expertise in stunts and fight choreography. Worked alongside notable actors and filmmakers, establishing a reputation in Hollywood. Achievements included performing stunts for prominent lead actors, making a significant mark in the stunt community. In addition to stunts, also acted in various television shows, further diversifying contributions to the entertainment industry.
Continue ReadingJohn Waters
An influential figure in independent cinema, contributed as a director, producer, and screenwriter. Gained prominence in the 1970s with films characterized by their unconventional narratives and camp aesthetics. Achieved widespread recognition with the 1988 film 'Hairspray', which later became a successful Broadway musical and a Hollywood remake. Waters's works often explore themes of identity, marginalized communities, and social norms.
Continue ReadingA. Sabapathy
A prominent journalist and politician, contributed significantly to the political landscape of Sri Lanka in the early 20th century. Advocated for social justice and education reform. Actively engaged in journalism, addressing colonial issues and promoting the rights of the Tamil community. Served in various political positions, playing a critical role in local governance and national discussions on civil rights. Died in 1924, leaving a legacy in Sri Lankan politics and journalism.
Continue Reading