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  2. AM–GM inequality - Wikipedia

    en.wikipedia.org/wiki/AM–GM_inequality

    The arithmetic mean, or less precisely the average, of a list of n numbers x 1, x 2, . . . , x n is the sum of the numbers divided by n: + + +. The geometric mean is similar, except that it is only defined for a list of nonnegative real numbers, and uses multiplication and a root in place of addition and division:

  3. Series (mathematics) - Wikipedia

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

    An arithmetico-geometric series is a series that has terms which are each the product of an element of an arithmetic progression with the corresponding element of a geometric progression. Example: 3 + 5 2 + 7 4 + 9 8 + 11 16 + ⋯ = ∑ n = 0 ∞ ( 3 + 2 n ) 2 n . {\displaystyle 3+{5 \over 2}+{7 \over 4}+{9 \over 8}+{11 \over 16}+\cdots =\sum ...

  4. Additional Mathematics - Wikipedia

    en.wikipedia.org/wiki/Additional_Mathematics

    5.1 Arithmetic Progressions; 5.2 Geometric Progressions; 6) Linear Law 6.1 Linear and Non-Linear Relations; 6.2 Linear Law and Non-Linear Relations; 6.3 Applications of Linear Law; 7) Coordinate Geometry 7.1 Divisor of a Line Segment; 7.2 Parallel Lines and Perpendicular Lines; 7.3 Areas of Polygons; 7.4 Equations of Loci; 8) Vectors 8.1 Vectors

  5. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    This produced more rigorous approaches, while transitioning from geometric methods to algebraic and then arithmetic proofs. [ 6 ] At the end of the 19th century, it appeared that the definitions of the basic concepts of mathematics were not accurate enough for avoiding paradoxes (non-Euclidean geometries and Weierstrass function ) and ...

  6. Roth's theorem on arithmetic progressions - Wikipedia

    en.wikipedia.org/wiki/Roth's_Theorem_on...

    Roth's theorem on arithmetic progressions (infinite version): A subset of the natural numbers with positive upper density contains a 3-term arithmetic progression. An alternate, more qualitative, formulation of the theorem is concerned with the maximum size of a Salem–Spencer set which is a subset of [ N ] = { 1 , … , N } {\displaystyle [N ...

  7. Sequence - Wikipedia

    en.wikipedia.org/wiki/Sequence

    An infinite sequence of real numbers (in blue). This sequence is neither increasing, decreasing, convergent, nor Cauchy. It is, however, bounded. In mathematics, a sequence is an enumerated collection of objects in which repetitions are allowed and order matters. Like a set, it contains members (also called elements, or terms).

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