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  2. History of algebra - Wikipedia

    en.wikipedia.org/wiki/History_of_algebra

    Another key event in the further development of algebra was the general algebraic solution of the cubic and quartic equations, developed in the mid-16th century. The idea of a determinant was developed by Japanese mathematician Kowa Seki in the 17th century, followed by Gottfried Leibniz ten years later, for the purpose of solving systems of ...

  3. Timeline of algebra - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_algebra

    Greek mathematician Hero of Alexandria, treats algebraic equations in three volumes of mathematics. c. 200: Hellenistic mathematician Diophantus, who lived in Alexandria and is often considered to be the "father of algebra", writes his famous Arithmetica, a work featuring solutions of algebraic equations and on the theory of numbers. 499

  4. Timeline of mathematics - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_mathematics

    This is a timeline of pure and applied mathematics history.It is divided here into three stages, corresponding to stages in the development of mathematical notation: a "rhetorical" stage in which calculations are described purely by words, a "syncopated" stage in which quantities and common algebraic operations are beginning to be represented by symbolic abbreviations, and finally a "symbolic ...

  5. Progressive Era - Wikipedia

    en.wikipedia.org/wiki/Progressive_Era

    The Progressive Era (1890s–1920s [1] [2]) was a period in the United States during the early 20th century of widespread social activism and political reform across the country. [ 3 ] [ 4 ] Progressives sought to address the problems caused by rapid industrialization, urbanization, immigration, and political corruption as well as the enormous ...

  6. History of the United States (1865–1917) - Wikipedia

    en.wikipedia.org/wiki/History_of_the_United...

    After 1900 and the assassination of President William McKinley, the Progressive Era brought political, business, and social reforms (e.g., new roles for and government expansion of education, higher status for women, a curtailment of corporate excesses, and modernization of many areas of government and society).

  7. List of unsolved problems in mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.

  8. Dying To Be Free - The Huffington Post

    projects.huffingtonpost.com/dying-to-be-free...

    There's A Treatment For Heroin Addiction That Actually Works. Why Aren't We Using It?

  9. History of mathematics - Wikipedia

    en.wikipedia.org/wiki/History_of_mathematics

    For instance, although Vietnamese mathematical treatises were written in either Chinese or the native Vietnamese Chữ Nôm script, all of them followed the Chinese format of presenting a collection of problems with algorithms for solving them, followed by numerical answers. [123] Mathematics in Vietnam and Korea were mostly associated with the ...

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