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  2. e (mathematical constant) - Wikipedia

    en.wikipedia.org/wiki/E_(mathematical_constant)

    The number e is a mathematical constant approximately equal to 2.71828 that is the base of the natural logarithm and exponential function.It is sometimes called Euler's number, after the Swiss mathematician Leonhard Euler, though this can invite confusion with Euler numbers, or with Euler's constant, a different constant typically denoted .

  3. Rruga Sesam/Ulica Sezam - Wikipedia

    en.wikipedia.org/wiki/Rruga_Sesam/Ulica_Sezam

    [3] The first season began airing on 5 December 2004. Both the first and second seasons of the show consisted of 26 episodes, each half an hour long. [4] The second season of the show began airing on Radio Television Kosovo, as well as Serbian-language channels TV Puls, TV Most, and TV Herc, in late 2006. [5]

  4. Euler's identity - Wikipedia

    en.wikipedia.org/wiki/Euler's_identity

    The number e (e = 2.71828...), also known as Euler's number, which occurs widely in mathematical analysis The number i , the imaginary unit such that i 2 = − 1 {\displaystyle i^{2}=-1} The equation is often given in the form of an expression set equal to zero, which is common practice in several areas of mathematics.

  5. Portal:Mathematics - Wikipedia

    en.wikipedia.org/wiki/Portal:Mathematics

    The sum of degrees of all six vertices is 2 + 3 + 2 + 3 + 3 + 1 = 14, twice the number of edges. In graph theory , the handshaking lemma is the statement that, in every finite undirected graph , the number of vertices that touch an odd number of edges is even.

  6. Eigenvalues and eigenvectors - Wikipedia

    en.wikipedia.org/wiki/Eigenvalues_and_eigenvectors

    So, the set E is the union of the zero vector with the set of all eigenvectors of A associated with λ, and E equals the nullspace of (A − λI). E is called the eigenspace or characteristic space of A associated with λ. [27] [9] In general λ is a complex number and the eigenvectors are complex n by 1 matrices.

  7. Limit (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Limit_(mathematics)

    [2] [3] Grégoire de Saint-Vincent gave the first definition of limit (terminus) of a geometric series in his work Opus Geometricum (1647): "The terminus of a progression is the end of the series, which none progression can reach, even not if she is continued in infinity, but which she can approach nearer than a given segment." [4]

  8. Education in Serbia - Wikipedia

    en.wikipedia.org/wiki/Education_in_Serbia

    Education in Serbia is divided into preschool (predškolsko), primary school (osnovna škola), secondary school (srednja škola) and higher education levels. It is regulated by the Ministry of Education, Science and Technological Development of the Republic of Serbia.

  9. Euler's totient function - Wikipedia

    en.wikipedia.org/wiki/Euler's_totient_function

    The first thousand values of φ(n).The points on the top line represent φ(p) when p is a prime number, which is p − 1. [1]In number theory, Euler's totient function counts the positive integers up to a given integer n that are relatively prime to n.