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  2. Numeric precision in Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Numeric_precision_in...

    Excel maintains 15 figures in its numbers, but they are not always accurate; mathematically, the bottom line should be the same as the top line, in 'fp-math' the step '1 + 1/9000' leads to a rounding up as the first bit of the 14 bit tail '10111000110010' of the mantissa falling off the table when adding 1 is a '1', this up-rounding is not undone when subtracting the 1 again, since there is no ...

  3. Unicode subscripts and superscripts - Wikipedia

    en.wikipedia.org/wiki/Unicode_subscripts_and...

    Since these characters appear in different Unicode ranges, they may not appear to be the same size or position due to font substitution by the browser. Shaded cells mark small capitals that are not very distinct from minuscules, and Greek letters that are indistinguishable from Latin, and so would not be expected to be supported by Unicode.

  4. Obsolete and nonstandard symbols in the International ...

    en.wikipedia.org/wiki/Obsolete_and_nonstandard...

    standard Unicode Basic Latin/ASCII lower-case g (U+0067) may have a double-loop g glyph. the preferred IPA single-loop g (U+0261) is in the IPA Extensions Unicode block. for a time it was proposed that the double-loop g might be used for [ɡ] and the single-loop g for [ᶃ] (ɡ̟), [2] but the distinction never caught on. double-loop g

  5. Sigma - Wikipedia

    en.wikipedia.org/wiki/Sigma

    Sigma (/ ˈ s ɪ ɡ m ə / SIG-mə; [1] uppercase Σ, lowercase σ, lowercase in word-final position ς; Ancient Greek: σίγμα) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 200. In general mathematics, uppercase Σ is used as an operator for summation.

  6. List of Unicode characters - Wikipedia

    en.wikipedia.org/wiki/List_of_Unicode_characters

    The x must be lowercase in XML documents. The nnnn or hhhh may be any number of digits and may include leading zeros. The hhhh may mix uppercase and lowercase, though uppercase is the usual style. In contrast, a character entity reference refers to a character by the name of an entity which has the desired character as its replacement text.

  7. Greek letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/Greek_letters_used_in...

    Sets of numbers are typically bold or blackboard bold. The Greek letter forms used in mathematics are often different from those used in Greek-language text: they are designed to be used in isolation, not connected to other letters, and some use variant forms which are not normally used in current Greek typography.

  8. Subscript and superscript - Wikipedia

    en.wikipedia.org/wiki/Subscript_and_superscript

    In symbolic form, the number of nucleons is denoted as a superscripted prefix to the chemical symbol (for example 3 He, 12 C, 13 C, 131 I, and 238 U). The letters m or f may follow the number to indicate metastable or fission isomers, as in 58m Co or 240f Pu. Subscripts and superscripts can also be used together to give more specific ...

  9. File:Sigma uc lc.svg - Wikipedia

    en.wikipedia.org/wiki/File:Sigma_uc_lc.svg

    The following other wikis use this file: Usage on als.wikipedia.org Kyrillisches Alphabet; S; Usage on am.wikipedia.org S; Usage on ar.wikipedia.org