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  2. Sigma Delta Tau - Wikipedia

    en.wikipedia.org/wiki/Sigma_Delta_Tau

    Sigma Delta Tau (ΣΔΤ) is an American sorority and member of the National Panhellenic Conference. Sigma Delta Tau was founded on March 25, 1917 at Cornell University by Jewish women. However, there is no religious requirement for membership to the sorority, and it prides itself on being inclusive of all, as well as being historically Jewish ...

  3. List of social sororities and women's fraternities - Wikipedia

    en.wikipedia.org/wiki/List_of_social_sororities...

    Alpha Sigma Chi: ΑΣΧ: 1923 Local SUNY Oswego: Traditional Active [4] [j] Alpha Sigma Delta: ΑΣΔ: 1918 – 1932: National Independent Traditional Inactive [k] Alpha Sigma Rho: ΑΣΡ: 1998 National NAPA Asian American Active Alpha Sigma Tau: ΑΣΤ: 1899 National NPC: Traditional Αλφα Σιγμα Ταυ [sic] Active [l] Alpha Xi Delta ...

  4. List of Jewish fraternities and sororities - Wikipedia

    en.wikipedia.org/wiki/List_of_Jewish...

    Sigma Tau Phi: ΣΤΦ: 1918 – 1947: University of Pennsylvania: National 0 Merged [q] [r] Tau Delta Mu: ΤΔΜ: 1920 –19xx ? City University of New York: National 0 Inactive [6] [s] Tau Delta Phi: ΤΔΦ: June 10, 1910: New York City, New York: NIC: National 5 Active [1] [t] Tau Epsilon Phi: ΤΕΦ: October 10, 1910: Columbia University ...

  5. List of Sigma Delta Tau chapters - Wikipedia

    en.wikipedia.org/wiki/List_of_Sigma_Delta_Tau...

    Sigma Delta Tau is an American sorority. Jewish students founded it at Cornell University in 1917. In the following list, its active chapters are indicated in bold and its inactive chapters are in italics .

  6. List of social fraternities - Wikipedia

    en.wikipedia.org/wiki/List_of_social_fraternities

    Sigma Delta: ΣΔ: 1845–1880 Local Yale University: Traditional, Freshmen Inactive [2] Sigma Delta Alpha: ΣΔΑ: 1992 National Independent Latino Excelencia y Lealtad Entre Hermanos (Excellence and Loyalty Amongst Brothers) Active Sigma Delta Rho: ΣΔΡ: 1921 – 1935: National NIC: Traditional Inactive [be] Sigma Iota: ΣΙ: 1904 – 1931 ...

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

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

    Alternative symbol for a wave function in quantum mechanics; Note: The empty set symbol ∅ looks similar, but is unrelated to the Greek letter. or represents: the golden ratio 1.618... in mathematics, art, and architecture [63] Euler's totient function in number theory [64]

  8. What do teens mean when they say ‘sigma’? - AOL

    www.aol.com/news/teens-mean-sigma-210752971.html

    Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to ... Sigma males are “considered ‘equal’ to Alphas on the hierarchy but live outside of the hierarchy by ...

  9. Sigma Tau Delta - Wikipedia

    en.wikipedia.org/wiki/Sigma_Tau_Delta

    Sigma Tau Delta joined the Association of College Honor Societies in 1972. [4] By 2011, it had grown to 812 active chapters and 9,000 active members. [4] Literary honor society Lambda Iota Tau went dormant in 2016-2017, with many members joining Sigma Tau Delta. [3] [5] As of 2024, the society has chartered 850 chapters.