Alfred James Lotka (March 2, 1880 - December 5, 1949) was a US mathematician and statistician, most famous for his work in population dynamics. March 2 is the 61st day of the year in the Gregorian Calendar (62nd in leap years). ... 1880 was a leap year starting on Thursday (see link for calendar). ... December 5 is the 339th day (340th in leap years) of the year in the Gregorian calendar. ... 1949 is a common year starting on Saturday. ... ... A mathematician is a person whose area of study and research is mathematics. ... For Wikipedia statistics, see m:Statistics Statistics is the science and practice of developing human knowledge through the use of empirical data expressed in quantitative form. ... Population dynamics is the study of marginal and long-term changes in the numbers, individual weights and age composition of individuals in one or several populations, and biological and environmental processes influencing those changes. ...

Born in Lemberg, Austria-Hungary (now L'viv, Ukraine) Lotka's parents were US nationals and he was educated internationally, including a degree at the University of Birmingham, England. In 1935, he married Romola Beattie. They had no children. His varied working life included: Austria-Hungary, also known as the Dual monarchy (or: the k. ... Lviv coat of arms Motto: Semper fidelis Municipal government City council (Львівська міська рада) Mayor City chairman Lyubomyr Bunyak Area 171,01 km² Population    total 2000    density 808,900 4786/km² Founded city rights 13th century 1353 Area code + 0322 Latitude Longitude 49°51′ N 24°01′ E Twin towns... ... The University of Birmingham is the oldest of three universities in the English city of Birmingham. ... Royal motto: Dieu et mon droit (French: God and my right) Englands location within the UK Official language English de facto Capital London de facto Largest city London Area - Total Ranked 1st UK 130,395 km² Population - Total (mid-2004) - Density Ranked 1st UK 50. ... 1935 was a common year starting on Tuesday (link will take you to calendar). ...

• General Chemical Company
• US Patent Office
• National Bureau of Standards
• Editor of the Scientific American Supplement (1911-1914)
• Staff member at Johns Hopkins University (1922 - 1924)
• Statistician for the Metropolitan Life Insurance Company, New York (1924 until his retirement)

While at Johns Hopkins, Lotka completed his book Elements of Physical Biology (1924) in which he extended the work of Pierre François Verhulst and Vito Volterra. His name is most famously associated with the Lotka-Volterra equation of population dynamics. The United States Patent and Trademark Office (PTO or USPTO) is an agency in the United States Department of Commerce that provides patent and trademark protection to inventors and businesses for their inventions and corporate and product identification. ... As a non-regulatory agency of the United States Department of Commerce’s Technology Administration, the National Institute of Standards (NIST) develops and promotes measurement, standards, and technology to enhance productivity, facilitate trade, and improve the quality of life. ... Scientific American is one of the oldest and most serious popular-science magazines. ... 1911 was a common year starting on Sunday (click on link for calendar). ... 1914 is a common year starting on Thursday. ... The Johns Hopkins University is a private institution of higher learning located in Baltimore, Maryland. ... 1922 was a common year starting on Sunday (see link for calendar). ... 1924 was a leap year starting on Tuesday (link will take you to calendar). ... MetLife, Inc. ... State nickname: Empire State Other U.S. States Capital Albany Largest city New York Governor George Pataki (R) Official languages None (English is de facto) Area 141,205 km² (27th)  - Land 122,409 km²  - Water 18,795 km² (13. ... 1924 was a leap year starting on Tuesday (link will take you to calendar). ... Pierre François Verhulst (October 28, 1804 - February 15, 1849, Brussels, Belgium) was a mathematician and a doctor in number theory from the University of Ghent in 1825. ... Vito Volterra (May 3, 1860 - October 11, 1940) was an Italian mathematician and physicist, best known for his contributions to mathematical biology. ... The Lotka-Volterra equations, also known as the predator-prey equations, are a pair of first order, non-linear, differential equations frequently used to describe the dynamics of biological systems in which two species interact, one a predator and one its prey. ...

Honors

• President of the Population Association of America (1938-1939)
• President of the American Statistical Association (1942)