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  2. Upside-down question and exclamation marks - Wikipedia

    en.wikipedia.org/wiki/Upside-down_question_and...

    Upside-down marks, simple in the era of hand typesetting, were originally recommended by the Real Academia Española (Royal Spanish Academy), in the second edition of the Ortografía de la lengua castellana (Orthography of the Castilian language) in 1754 [3] recommending it as the symbol indicating the beginning of a question in written Spanish—e.g. "¿Cuántos años tienes?"

  3. Question mark - Wikipedia

    en.wikipedia.org/wiki/Question_mark

    Ella me pregunta «¿qué hora es?» – 'She asks me, "What time is it? " ' Question marks must always be matched, but to mark uncertainty rather than actual interrogation omitting the opening one is allowed, although discouraged: [15] Gengis Khan (¿1162?–1227) is preferred in Spanish over Gengis Khan (1162?–1227)

  4. List of logic symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_logic_symbols

    In logic, a set of symbols is commonly used to express logical representation. The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics.

  5. Dollar sign - Wikipedia

    en.wikipedia.org/wiki/Dollar_sign

    The dollar sign, also known as the peso sign, is a currency symbol consisting of a capital S crossed with one or two vertical strokes ($ or depending on typeface), used to indicate the unit of various currencies around the world, including most currencies denominated "dollar" or "peso".

  6. Code 11 - Wikipedia

    en.wikipedia.org/wiki/Code_11

    The decode table has 15 entries because the symbols with two wide bars (1, 4 and 5) are listed twice. Assuming narrow elements are one unit wide and wide elements are two units, the average digit is 7.8 units. This is better than codes with a larger repertoire like Codabar (10 units) or Code 39 (11 units), but not quit

  7. Equals sign - Wikipedia

    en.wikipedia.org/wiki/Equals_sign

    The first use of an equals sign, equivalent to 14x+15=71 in modern notation.From The Whetstone of Witte (1557) by Robert Recorde. Recorde's introduction of "=" Before the 16th century, there was no common symbol for equality, and equality was usually expressed with a word, such as aequales, aequantur, esgale, faciunt, ghelijck, or gleich, and sometimes by the abbreviated form aeq, or simply æ ...

  8. Wikipedia:Number sign - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Number_sign

    On Wikipedia, a number sign, hash sign, pound sign or hashtag (#) may refer to one of the following uses: . Number signs used in wiki markup. Number signs used to create ordered lists

  9. José María Heredia y Heredia - Wikipedia

    en.wikipedia.org/wiki/José_María_Heredia_y_Heredia

    José María Heredia was born in Santiago de Cuba on December 31, 1803, [7] to parents José Francisco Heredia Mieses and Mercedes Heredia Campuzano-Polanco natives of Santo Domingo. [10] As a young boy in Cuba, he learned how to read and write Latin and Greek and translated famous works such as Homer, Horace, and other classical authors and ...