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  2. List of guitar tunings - Wikipedia

    en.wikipedia.org/wiki/List_of_guitar_tunings

    Four down-tuned variations are used by the band Sevendust: A Drop C# variation, or C ♯-G ♯-c ♯-f ♯-g ♯-c ♯ ', Also uses a variation where the lowest string is dropped to G ♯ on the song "Chop", A Drop C variation, or 'C-G-c-f-g-c'.

  3. Alpha beta filter - Wikipedia

    en.wikipedia.org/wiki/Alpha_beta_filter

    An alpha beta filter (also called alpha-beta filter, f-g filter or g-h filter [1]) is a simplified form of observer for estimation, data smoothing and control applications. It is closely related to Kalman filters and to linear state observers used in control theory. Its principal advantage is that it does not require a detailed system model.

  4. Regular tuning - Wikipedia

    en.wikipedia.org/wiki/Regular_tuning

    "The augmented-fourth interval is the only interval whose inverse is the same as itself. The augmented-fourths tuning is the only tuning (other than the 'trivial' tuning CCCCCC) for which all chords-forms remain unchanged when the strings are reversed. Thus the augmented-fourths tuning is its own 'lefty' tuning." [23]

  5. Comparison of programming languages (syntax) - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_programming...

    Many esoteric programming languages follow the convention that any text not executed by the instruction pointer (e.g., Befunge) or otherwise assigned a meaning (e.g., Brainfuck), is considered a "comment".

  6. F♯ (musical note) - Wikipedia

    en.wikipedia.org/wiki/F%E2%99%AF_(musical_note)

    F Sharp notes. F ♯ (F-sharp; also known as fa dièse or fi) is the seventh semitone of the solfège.. It lies a chromatic semitone above F and a diatonic semitone below G, thus being enharmonic to sol bémol or G ♭ (G-flat) in 12 equal temperament.

  7. Delta-functor - Wikipedia

    en.wikipedia.org/wiki/Delta-functor

    For each short exact sequence as above, there is a long exact sequence; For each morphism of short exact sequences and for each non-negative n, the induced square . is commutative (the δ n on the top is that corresponding to the short exact sequence of M's whereas the one on the bottom corresponds to the short exact sequence of N's).

  8. C Sharp (programming language) - Wikipedia

    en.wikipedia.org/wiki/C_Sharp_(programming_language)

    C# (/ ˌ s iː ˈ ʃ ɑːr p / see SHARP) [b] is a general-purpose high-level programming language supporting multiple paradigms.C# encompasses static typing, [16]: 4 strong typing, lexically scoped, imperative, declarative, functional, generic, [16]: 22 object-oriented (class-based), and component-oriented programming disciplines.

  9. C-sharp major - Wikipedia

    en.wikipedia.org/wiki/C-sharp_major

    However, Johann Sebastian Bach chose C-sharp major for Prelude and Fugue No. 3 in both books of The Well-Tempered Clavier. In Hungarian Rhapsody No. 6 , Franz Liszt takes the unusual step of changing the key from D-flat major to C-sharp major near the start of the piece, and then back again to B-flat minor.