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  2. APL syntax and symbols - Wikipedia

    en.wikipedia.org/wiki/APL_syntax_and_symbols

    In the above case, the reduce or slash operator moderates the multiply function. The expression ×/2 3 4 evaluates to a scalar (1 element only) result through reducing an array by multiplication. The above case is simplified, imagine multiplying (adding, subtracting or dividing) more than just a few numbers together.

  3. List of Unicode characters - Wikipedia

    en.wikipedia.org/wiki/List_of_Unicode_characters

    Vulgar fraction one quarter 0124 U+00BD ½ 189 0302 0275 ½ Vulgar fraction one half 0125 U+00BE ¾ 190 0302 0276 ¾ Vulgar fraction three quarters 0126 U+00BF ¿ 191 0302 0277 ¿ Inverted Question Mark: 0127 Letters: Uppercase. U+00C0 À 192 0303 0200 À Latin Capital Letter A with grave: 0128 U+00C1 Á 193 0303 0201 ...

  4. Exponentiation - Wikipedia

    en.wikipedia.org/wiki/Exponentiation

    In mathematics, exponentiation, denoted b n, is an operation involving two numbers: the base, b, and the exponent or power, n. [1] When n is a positive integer, exponentiation corresponds to repeated multiplication of the base: that is, b n is the product of multiplying n bases: [1] = ⏟.

  5. Quadratic formula - Wikipedia

    en.wikipedia.org/wiki/Quadratic_formula

    The roots of the quadratic function y = ⁠ 1 / 2 ⁠ x 2 − 3x + ⁠ 5 / 2 ⁠ are the places where the graph intersects the x-axis, the values x = 1 and x = 5. They can be found via the quadratic formula. In elementary algebra, the quadratic formula is a closed-form expression describing the solutions of a quadratic equation.

  6. Glossary of commutative algebra - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_commutative...

    2. A valuation ring is an integral domain R such that if x is in its quotient field and if it is nonzero then either x or its inverse is in R. 3. A valuation group is a totally ordered abelian group. The valuation group of a valuation ring is the group of non-zero elements of the quotient field modulo the group of units of the valuation ring.

  7. Debt-to-GDP ratio - Wikipedia

    en.wikipedia.org/wiki/Debt-to-GDP_ratio

    According to the IMF World Economic Outlook Database (April 2021), [3] the level of Gross Government debt-to-GDP ratio in Canada was 116.3%, in China 66.8%, in India 89.6%, in Germany 70.3%, in France 115.2% and in the United States 132.8%. Debt to GDP for the United States

  8. Social Security (United States) - Wikipedia

    en.wikipedia.org/wiki/Social_Security_(United...

    Reduce benefits for new retirees. If Social Security benefits were reduced by 3% to 5% for new retirees, about 18% to 30% percent of the funding gap would be eliminated. [citation needed] Average in more working years. Social Security benefits are now based on an average of a worker's 35 highest paid annual salaries with zeros averaged in if ...

  9. ISO 8601 - Wikipedia

    en.wikipedia.org/wiki/ISO_8601

    To resolve ambiguity, "P1M" is a one-month duration and "PT1M" is a one-minute duration (note the time designator, T, that precedes the time value). The smallest value used may also have a decimal fraction, [39] as in "P0.5Y" to indicate half a year. This decimal fraction may be specified with either a comma or a full stop, as in "P0,5Y" or "P0 ...