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  2. Aristarchian symbols - Wikipedia

    en.wikipedia.org/wiki/Aristarchian_symbols

    A 'dotted lunate sigma' (σίγμα περιεστιγμένον) Ͼ was used by him as an editorial sign indicating that the line so-marked is at an incorrect position in the surrounding text; an antisigma, or 'reversed lunate sigma' Ͻ, may also mark an out of place line.

  3. Coinage of Adelchis of Benevento - Wikipedia

    en.wikipedia.org/wiki/Coinage_of_Adelchis_of_B...

    The temple motif was also used in the coinage of Louis the Pious, [22] with differences in the legend, which became XPISTIANA RELIGIO with the letter "S" instead of Charles' lunate sigma. [23] [24] The temple used by Adelchis had a tympanum on the apex of which was a cross, while there were two columns, separated by a small cross placed in the ...

  4. Christogram - Wikipedia

    en.wikipedia.org/wiki/Christogram

    In Eastern Christianity, the most widely used Christogram is a four-letter abbreviation, ΙϹ ΧϹ—a traditional abbreviation of the Greek words for 'Jesus Christ' (i.e., the first and last letters of each of the words ΙΗϹΟΥϹ ΧΡΙϹΤΟϹ, with the lunate sigma 'Ϲ' common in medieval Greek), [23] and written with titlo (diacritic ...

  5. Stigma (ligature) - Wikipedia

    en.wikipedia.org/wiki/Stigma_(ligature)

    Stigma was co-opted as a name specifically for the στ sign, evidently because of the acrophonic value of its initial st-as well as the analogy with the name of sigma. The numeral symbol, originally quite unrelated to the στ ligature, developed from the letter Ϝ , which stood for the sound /w/ in early pre-classical forms of the Greek alphabet.

  6. Sigma - Wikipedia

    en.wikipedia.org/wiki/Sigma

    Today, it is known as lunate sigma (uppercase Ϲ, lowercase ϲ), because of its crescent-like shape, and is still widely used in decorative typefaces in Greece, especially in religious and church contexts, as well as in some modern print editions of classical Greek texts.

  7. C - Wikipedia

    en.wikipedia.org/wiki/C

    Other alphabets have letters homoglyphic to 'c' but not analogous in use and derivation, like the Cyrillic letter Es (С, с) which derives from the lunate sigma. Later use When the Roman alphabet was introduced into Britain, c represented only /k/ , and this value of the letter has been retained in loanwords to all the insular Celtic languages ...

  8. Lunate - Wikipedia

    en.wikipedia.org/wiki/Lunate

    Lunate is a crescent or moon-shaped microlith. In the specialized terminology of lithic reduction, a lunate flake is a small, crescent-shaped flake removed from a stone tool during the process of pressure flaking. In the Natufian period, a lunate was a small crescent-shaped stone tool that was sometimes used to harvest grasses.

  9. Vietnamese Wikipedia - Wikipedia

    en.wikipedia.org/wiki/Vietnamese_Wikipedia

    The Vietnamese Wikipedia initially went online in November 2002, with a front page and an article about the Internet Society.The project received little attention and did not begin to receive significant contributions until it was "restarted" in October 2003 [3] and the newer, Unicode-capable MediaWiki software was installed soon after.