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*World of Mathematics* on Nikolai Ivanovich Lobachevsky

Nikolai Ivanovich Lobachevsky is the first mathematician to publicly publish a system of non-Euclidean **geometry**. Although **Karl Friedrich Gauss** preceded him in the late 18th century and **János Bolyai** had devised a similar (though less analytical) conclusions around the same time, Lobachevsky showed that Euclid's Fifth postulate(also known as the **Parallel postulate**) could not be proved on the basis of the other postulates, and in turn created a new way of looking at geometry and geometric problems. Most of Lobachevsky's contemporaries scoffed at his conclusions, and he only became credited with his discoveries after his death. In fact, Lobachevsky sought credibility by publishing in different languages, but only a few of his colleagues supported his findings, including Gauss. Lobachevsky also did relevant research in other areas, including **infinite series** theory, integral **calculus**, probability, and the approximation of **roots** of algebraic **equations**.

Lobachevsky was born on...

This section contains 1,124 words(approx. 4 pages at 300 words per page) |