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  2. List of number theory topics - Wikipedia

    en.wikipedia.org/wiki/List_of_number_theory_topics

    5 Analytic number theory: additive problems. ... Download as PDF; Printable version; ... Lucas–Lehmer test for Mersenne numbers; AKS primality test; Integer ...

  3. List of types of numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_types_of_numbers

    Such a number is algebraic and can be expressed as the sum of a rational number and the square root of a rational number. Constructible number: A number representing a length that can be constructed using a compass and straightedge. Constructible numbers form a subfield of the field of algebraic numbers, and include the quadratic surds.

  4. Rational number - Wikipedia

    en.wikipedia.org/wiki/Rational_number

    In mathematics, "rational" is often used as a noun abbreviating "rational number". The adjective rational sometimes means that the coefficients are rational numbers. For example, a rational point is a point with rational coordinates (i.e., a point whose coordinates are rational numbers); a rational matrix is a matrix of rational numbers; a rational polynomial may be a polynomial with rational ...

  5. Category:Rational numbers - Wikipedia

    en.wikipedia.org/wiki/Category:Rational_numbers

    Print/export Download as PDF; Printable version; In other projects Wikimedia Commons; ... This category represents all rational numbers, ...

  6. List of mathematical functions - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_functions

    Dirichlet function: is an indicator function that matches 1 to rational numbers and 0 to irrationals. It is nowhere continuous. Thomae's function: is a function that is continuous at all irrational numbers and discontinuous at all rational numbers. It is also a modification of Dirichlet function and sometimes called Riemann function.

  7. Congruent number - Wikipedia

    en.wikipedia.org/wiki/Congruent_number

    Triangle with the area 6, a congruent number. In number theory, a congruent number is a positive integer that is the area of a right triangle with three rational number sides. [1] [2] A more general definition includes all positive rational numbers with this property. [3] The sequence of (integer) congruent numbers starts with

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