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  2. Arithmetic dynamics - Wikipedia

    en.wikipedia.org/wiki/Arithmetic_dynamics

    Arithmetic dynamics [1] is a field that amalgamates two areas of mathematics, dynamical systems and number theory.Part of the inspiration comes from complex dynamics, the study of the iteration of self-maps of the complex plane or other complex algebraic varieties.

  3. Library of Congress Classification:Class Q -- Science

    en.wikipedia.org/wiki/Library_of_Congress...

    Class Q: Science is a classification used by the Library of Congress Classification system. This article outlines the subclasses of Class Q. [ 1 ] [ 2 ] Q - Science (General)

  4. Ninth grade - Wikipedia

    en.wikipedia.org/wiki/Ninth_grade

    Ninth grade (also 9th grade or grade 9) is the ninth or tenth year of formal or compulsory education in some countries. It is generally part of middle school or secondary school depending on country. Students in ninth grade are usually 14–15 years old, but in some countries are 15–16.

  5. Consistent and inconsistent equations - Wikipedia

    en.wikipedia.org/wiki/Consistent_and...

    The system + =, + = has exactly one solution: x = 1, y = 2 The nonlinear system + =, + = has the two solutions (x, y) = (1, 0) and (x, y) = (0, 1), while + + =, + + =, + + = has an infinite number of solutions because the third equation is the first equation plus twice the second one and hence contains no independent information; thus any value of z can be chosen and values of x and y can be ...

  6. Horseshoe map - Wikipedia

    en.wikipedia.org/wiki/Horseshoe_map

    In the mathematics of chaos theory, a horseshoe map is any member of a class of chaotic maps of the square into itself. It is a core example in the study of dynamical systems . The map was introduced by Stephen Smale while studying the behavior of the orbits of the van der Pol oscillator .

  7. No, photo doesn't show migrants leaving NYC before Trump ...

    www.aol.com/no-photo-doesnt-show-migrants...

    The claim: Photo shows migrants leaving NYC for Canada ahead of Trump presidency. A Nov. 14 Facebook post (direct link, archive link) includes an image showing several people stepping off a bus ...

  8. Steven Strogatz - Wikipedia

    en.wikipedia.org/wiki/Steven_Strogatz

    Steven Henry Strogatz (/ ˈ s t r oʊ ɡ æ t s /; born August 13, 1959) is an American mathematician and author, and the Susan and Barton Winokur Distinguished Professor for the Public Understanding of Science and Mathematics at Cornell University.

  9. Man Charged with Killing 2, Including Local Rapper, Outside ...

    www.aol.com/man-charged-killing-2-including...

    A man has been charged in connection with the double homicide outside a funeral reception in Brighton, Ala., that killed two men — including rapper Landlord Lo.