![]() ![]() In addition, he made several important discoveries in astronomy and mechanics. He also made several other contributions to optics, such as disagreeing with Isaac Newton's theory of light. He also discovered the power series for the arctangent, which isĮuler helped the wave theory of light become the dominant idea for most of the nineteenth century. He is also credited with discovering Euler's constant, denoted as. His achievements often involved power series. This led to great advancements in calculus and algebra.Įuler contributed greatly to the expansion of a branch of mathematics called analysis. Įuler was the first to use the notation, and also was the first to call such structures functions. Euler's identity is a famous identity of complex numbers which states that for all.Euler's totient theorem is a theorem related to Euler's totient function, or the sum of all numbers relatively prime to a number and less than it.Euler's polyhedral formula states that for any convex polyhedron, with, and denoting the number of vertices, edges, and faces, respectively.In 1735, Euler showed that where is the zeta function.He was buried in the Alexander Nevsky Monastery. Petersburg, Russia after suffering a brain hemorrhage. On September 18, 1783, Euler passed away in St. Despite his horrible eyesight, Euler continued his prolific research.Įven as an old man, Euler was famous for being able to calculate difficult arithmetic quickly in his head. ![]() Soon after his return to Russia in 1766, he became almost completely blind in his left eye. Leonhard Euler was a Swiss mathematician who made an outstanding contribution to various disciplines such as logics, physics, and mathematics including. The young couple had thirteen children, only five of whom survived childhood.Īfter suffering a near-fatal fever in 1735, Euler became nearly blind in his right eye. On January 7, 1734, he married Katharina Gsell. At the age of thirteen he enrolled at the University of Basel. He had two young sisters, named Anna Maria and Maria Magdalena. Euler's parents were Paul Euler, a pastor of the Reformed Church, and Marguerite Brucker, a pastor's daughter. Euler was born on Apin Basel, Switzerland. ![]()
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