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  2. English Braille - Wikipedia

    en.wikipedia.org/wiki/English_Braille

    English Braille, also known as Grade 2 Braille, [1] is the braille alphabet used for English. It consists of around 250 letters , numerals, punctuation, formatting marks, contractions, and abbreviations . Some English Braille letters, such as ⠡ ch , [2] correspond to more than one letter in print.

  3. Mathematical notation - Wikipedia

    en.wikipedia.org/wiki/Mathematical_notation

    Mathematical notation consists of using symbols for representing operations, unspecified numbers, relations, and any other mathematical objects and assembling them into expressions and formulas. Mathematical notation is widely used in mathematics , science , and engineering for representing complex concepts and properties in a concise ...

  4. Unified English Braille - Wikipedia

    en.wikipedia.org/wiki/Unified_English_Braille

    2. reduce the overall number of official coding systems, which currently include: a. literary code (since 1933, English Braille Grade 2 has been the main component) i. BANA flavor used in North America, et cetera ii. BAUK flavor used in United Kingdom, etc. b. Textbook Formats and Techniques code c. math-notation and science-notation codes i.

  5. cis (mathematics) - Wikipedia

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

    The cis notation was first coined by William Edwin Hamilton in Elements of Quaternions (1866) [23] [24] and subsequently used by Irving Stringham (who also called it "sector of x") in works such as Uniplanar Algebra (1893), [25] [26] James Harkness and Frank Morley in their Introduction to the Theory of Analytic Functions (1898), [26] [27] or by George Ashley Campbell (who also referred to it ...

  6. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    Mathematical notation is widely used in science and engineering for representing complex concepts and properties in a concise, unambiguous, and accurate way. This notation consists of symbols used for representing operations, unspecified numbers, relations and any other mathematical objects, and then assembling them into expressions and ...

  7. Geometric algebra - Wikipedia

    en.wikipedia.org/wiki/Geometric_algebra

    A multivector that is the exterior product of linearly independent vectors is called a blade, and is said to be of grade ⁠ ⁠. [f] A multivector that is the sum of blades of grade is called a (homogeneous) multivector of grade ⁠ ⁠. From the axioms, with closure, every multivector of the geometric algebra is a sum of blades.

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