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  2. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    3. Between two groups, may mean that the first one is a proper subgroup of the second one. > (greater-than sign) 1. Strict inequality between two numbers; means and is read as "greater than". 2. Commonly used for denoting any strict order. 3. Between two groups, may mean that the second one is a proper subgroup of the first one. ≤ 1.

  3. Ø - Wikipedia

    en.wikipedia.org/wiki/Ø

    The "∅" symbol is always drawn as a slashed circle, whereas in most typefaces the letter "Ø" is a slashed ellipse. The diameter symbol ( ⌀ ) (Unicode character U+2300) is similar to the lowercase letter ø, and in some typefaces it even uses the same glyph , although in many others the glyphs are subtly distinguishable (normally, the ...

  4. Half-diminished seventh chord - Wikipedia

    en.wikipedia.org/wiki/Half-diminished_seventh_chord

    Half-diminished seventh chords are often symbolized as a circle with a diagonal line through it, as in B ø 7 or simply B ø. It also can be represented as a minor seventh chord with a superscript "♭ 5" (sometimes enclosed in parentheses). The terms and symbols for this chord break expectations that derive from the usual system of chord ...

  5. No symbol - Wikipedia

    en.wikipedia.org/wiki/No_symbol

    The symbol is defined as a circle, with the circular band having a thickness of 10% of the outer diameter of the circle. The inner diagonal line has a thickness of 8% of the outer diameter of the circle (i.e. 80% of the circle's line width). The diagonal is centered in the circle and at a 45-degree angle going from upper left to lower right.

  6. List of typographical symbols and punctuation marks - Wikipedia

    en.wikipedia.org/wiki/List_of_typographical...

    Dotted circle (Used as a generic placeholder when describing diacritics) Combining Diacritical Marks ⹀ ⸗ Double hyphen: Almost equal to … Ellipsis = Equals sign ℮ Estimated sign! Exclamation mark: Inverted exclamation mark, Interrobang: ª: Feminine ordinal indicator: Masculine ordinal indicator, Degree sign (many) Fleuron: Dinkus ...

  7. List of musical symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_musical_symbols

    Musical symbols are marks and symbols in musical notation that indicate various aspects of how a piece of music is to be performed. There are symbols to communicate information about many musical elements, including pitch, duration, dynamics, or articulation of musical notes; tempo, metre, form (e.g., whether sections are repeated), and details about specific playing techniques (e.g., which ...

  8. 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.

  9. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    The Pitch Circle Diameter (PCD) is the diameter of that circle that passes through the center of all the bolt holes or wheel bolts or wheel rim holes or studs. The best example is Flanges, there are multiple holes in the Flanges, the circle through the center of these holes is known as the pitch circle, and the diameter of this circle is known ...