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  2. Epson - Wikipedia

    en.wikipedia.org/wiki/Epson

    The ink reporting and ink cartridges used in Epson's Stylus Pro 9900-series large format printer reports on ink levels and simultaneously protect the health of the printhead. During printhead maintenance or cleanings, if a cartridge doesn't have enough ink to complete the cleaning, a fuller cartridge must be used.

  3. 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.

  4. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula.

  5. Today’s NYT ‘Strands’ Hints, Spangram and Answers for ...

    www.aol.com/today-nyt-strands-hints-spangram...

    - NYT ‘Connections’ Hints and Answers Today, Wednesday, December 11. Related: 15 Fun Games Like Connections to Play Every Day. Show comments. Advertisement. Advertisement. Holiday Shopping Guides.

  6. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    The transition from activities to the formal Mathematical systems is guided by a variety of general insights and ideas. Another approach for defining mathematics is to use its methods. For example, an area of study is often qualified as mathematics as soon as one can prove theorems—assertions whose validity relies on a proof, that is, a ...

  7. Savings interest rates today: Turn holiday downtime into high ...

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    Key terms to know Annual percentage yield. Called the APY, this is the total amount of interest you'll earn on your deposit over one year, including compound interest , expressed as a percentage.

  8. Algebra - Wikipedia

    en.wikipedia.org/wiki/Algebra

    The Italian mathematician Fibonacci brought al-Khwarizmi's ideas and techniques to Europe in books including his Liber Abaci. [108] In 1545, the Italian polymath Gerolamo Cardano published his book Ars Magna , which covered many topics in algebra, discussed imaginary numbers , and was the first to present general methods for solving cubic and ...

  9. Fantasy Football Week 14 Rankings: QBs - AOL

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    Wilson has another intriguing matchup on tap in Week 14 up against the Cleveland Browns, whose secondary has not been the lockdown unit it once was, giving up a league-high 20.1% explosive play ...