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  2. Spanish manual alphabet - Wikipedia

    en.wikipedia.org/wiki/Spanish_manual_alphabet

    An early representation of the Spanish manual alphabet, engraved by Francisco de Paula Martí Mora (1761–1827) and published in 1815. Of an edition of 300, the only surviving copy is in the Biblioteca de Catalunya in Barcelona. The Spanish manual alphabet is a fingerspelling system used in Spain. Different varieties are used in Madrid and ...

  3. Table of mathematical symbols by introduction date - Wikipedia

    en.wikipedia.org/wiki/Table_of_mathematical...

    unstrict inequality signs (less-than or equals to sign and greater-than or equals to sign) : 1670 (with the horizontal bar over the inequality sign, rather than below it) ...

  4. Spanish orthography - Wikipedia

    en.wikipedia.org/wiki/Spanish_orthography

    The Spanish language is written using the Spanish alphabet, which is the ISO Latin script with one additional letter, eñe ñ , for a total of 27 letters. [1] Although the letters k and w are part of the alphabet, they appear only in loanwords such as karate, kilo, waterpolo and wolframio (tungsten or wolfram) and in sensational spellings: okupa, bakalao.

  5. Mathematical operators and symbols in Unicode - Wikipedia

    en.wikipedia.org/wiki/Mathematical_operators_and...

    The Unicode Standard encodes almost all standard characters used in mathematics. [1] Unicode Technical Report #25 provides comprehensive information about the character repertoire, their properties, and guidelines for implementation. [1]

  6. List of numeral systems - Wikipedia

    en.wikipedia.org/wiki/List_of_numeral_systems

    The smallest base in which all fractions ⁠ 1 / 2 ⁠ to ⁠ 1 / 18 ⁠ have periods of 4 or shorter. 23: Kalam language, [47] Kobon language [citation needed] 24: Quadravigesimal [48] 24-hour clock timekeeping; Greek alphabet; Kaugel language. 25: Sometimes used as compact notation for quinary. 26: Hexavigesimal [48] [49]

  7. Spanish alphabet - Wikipedia

    en.wikipedia.org/?title=Spanish_alphabet&redirect=no

    To a section: This is a redirect from a topic that does not have its own page to a section of a page on the subject. For redirects to embedded anchors on a page, use {{R to anchor}} instead.

  8. Multiplication sign - Wikipedia

    en.wikipedia.org/wiki/Multiplication_sign

    Historically, computer language syntax was restricted to the ASCII character set, and the asterisk * became the de facto symbol for the multiplication operator. This selection is reflected in the numeric keypad on English-language keyboards, where the arithmetic operations of addition, subtraction, multiplication and division are represented by ...

  9. Help:IPA/Spanish - Wikipedia

    en.wikipedia.org/wiki/Help:IPA/Spanish

    The charts below show how the International Phonetic Alphabet (IPA) represents Spanish language pronunciations in Wikipedia articles. For a guide to adding IPA characters to Wikipedia articles, see Template:IPA, and Wikipedia:Manual of Style/Pronunciation § Entering IPA characters.