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  2. Number sign - Wikipedia

    en.wikipedia.org/wiki/Number_sign

    The symbol # is known variously in English-speaking regions as the number sign, hash, or pound sign. The symbol has historically been used for a wide range of purposes including the designation of an ordinal number and as a ligatured abbreviation for pounds avoirdupois – having been derived from the now-rare ℔ .

  3. Delta Epsilon Psi - Wikipedia

    en.wikipedia.org/wiki/Delta_Epsilon_Psi

    Delta Epsilon Psi (ΔΕΨ) is a South Asian interest social and service fraternity located in the United States. Delta Epsilon Psi Fraternity, Inc. was founded on October 1, 1998 at the University of Texas at Austin. The 18 founders formed the fraternity to provide a unified South Asian voice at the school.

  4. Delta rule - Wikipedia

    en.wikipedia.org/wiki/Delta_rule

    While the delta rule is similar to the perceptron's update rule, the derivation is different. The perceptron uses the Heaviside step function as the activation function g ( h ) {\displaystyle g(h)} , and that means that g ′ ( h ) {\displaystyle g'(h)} does not exist at zero, and is equal to zero elsewhere, which makes the direct application ...

  5. Delta Sigma Phi - Wikipedia

    en.wikipedia.org/wiki/Delta_Sigma_Phi

    Delta Sigma Phi (ΔΣΦ), commonly known as Delta Sig, is a fraternity established in 1899 at The City College of New York (CCNY). It was the first fraternity to be founded based on religious and ethnic acceptance. It is also one of three fraternities founded at CCNY (now a part of the City University of New York (CUNY)).

  6. 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 ...

  7. Delta Kappa Epsilon - Wikipedia

    en.wikipedia.org/wiki/Delta_Kappa_Epsilon

    Delta Kappa Epsilon (ΔΚΕ), commonly known as DKE or Deke, is one of the oldest fraternities in the United States, with fifty-six active chapters and five active colonies across North America. It was founded at Yale College in 1844 by fifteen sophomores who were discontented with the existing fraternity order on campus.

  8. Alpha Delta Pi - Wikipedia

    en.wikipedia.org/wiki/Alpha_Delta_Pi

    United States. Website. www .alphadeltapi .org. University of Illinois chapter house, listed in the NRHP. Alpha Delta Pi ( ΑΔΠ ), commonly known as ADPi (pronounced "ay-dee-pye"), is an International Panhellenic sorority founded on May 15, 1851, at Wesleyan College in Macon, Georgia. It is the oldest secret society for women.

  9. Therefore sign - Wikipedia

    en.wikipedia.org/wiki/Therefore_sign

    In logical argument and mathematical proof, the therefore sign, ∴, is generally used before a logical consequence, such as the conclusion of a syllogism. The symbol consists of three dots placed in an upright triangle and is read therefore. While it is not generally used in formal writing, it is used in mathematics and shorthand .