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Pier FerhulstBelgian mathematician
Date of Birth: 28.10.1804
Country:  Belgium |
Content:
- Biography of Pierre-François Verhulst
- Political Interests and Academic Career
- Later Career and Contributions
Biography of Pierre-François Verhulst
Education and Early CareerPierre-François Verhulst, a Belgian mathematician, is well-known for his work in population modeling. He received his initial education in Brussels and entered the University of Ghent in 1822. In 1825, he obtained his doctoral degree for his work in number theory. During his studies, Verhulst received several awards for his contributions to variational calculus.
Political Interests and Academic Career
The Belgian Revolution of 1830 and the introduction of Danish troops in 1831 partially diverted Verhulst's attention from research. However, his political endeavors were unsuccessful, which did not hinder him from later exploring social problems from a mathematical perspective. Verhulst also translated books on physics and became a professor at the University of Brussels in 1835. He taught subjects such as astronomy, celestial mechanics, differential and integral calculus, probability theory, geometry, and trigonometry.
Verhulst's interest in probability theory arose from observing lotteries, but he later applied it to political economy and demographic issues. During that time, these areas were actively developing thanks to the works of Malthus and the accumulation of statistical data in the social sciences. His most famous work is the formulation of the logistic equation for population growth, also known as the Verhulst equation. By introducing an additional negative term proportional to the square of the growth rate, he reflected the decrease in population due to limited habitat or resources.
Later Career and Contributions
In 1840, Verhulst became a professor at the Belgian Military University. In 1841, he was elected a member of the Belgian Academy of Sciences for his work on elliptic functions. In 1848, he was chosen as its president. However, due to his weak health, which had troubled him for many years, he held the position for only one year before passing away at the age of 45.
Based on his calculations, Verhulst predicted the upper limit of Belgium's population to be 9,400,000 people. In reality, in 1994, Belgium's population reached 10,118,000 people, which, considering the factor of migration, allows us to speak of a relatively accurate estimate.
