Sigma Pi (ΣΠ) is a collegiate fraternity with 232 chapters at American universities. As of 2021, the fraternity had more than 5,000 undergraduate members...

Sigma Pi Phi (ΣΠΦ), also known as The Boulé, founded in 1904, is the oldest fraternity for African Americans. The fraternity does not have collegiate chapters...

Sigma Pi Sigma (ΣΠΣ), founded at Davidson College on December 11, 1921, is the oldest and only American honor society for physics and astronomy. It is...

Phi Sigma Pi National Honor Fraternity (ΦΣΠ) is a gender-inclusive/mixed-sex national honor fraternity based in the United States. The fraternity is a...

Delta Sigma Pi (ΔΣΠ) (officially the International Fraternity of Delta Sigma Pi, Inc.) is a coeducational professional business fraternity and one of...

Pi Sigma Alpha (ΠΣΑ or PSA), the National Political Science Honor Society, is the only honor society for college and university students of political and...

Two Sigma Investments, LP is a New York City-based hedge fund that uses a variety of technological methods, including artificial intelligence, machine...

Others, such as Alpha Sigma, Beta Beta, Delta Sigma, Gamma Sigma, Epsilon Sigma, Omicron Sigma, Sigma Sigma, and Theta Sigma (Original) were chartered...

bond is a sigma bond while a multiple bond is composed of one sigma bond together with pi or other bonds. A double bond has one sigma plus one pi bond, and...

Sigma Pi Alpha Sorority, Inc. (ΣΠΑ) is a Chicana/Latina-based, Greek letter, intercollegiate sorority founded in 1996 at the University of California,...

μ σ ) 2 {\displaystyle f(x)={\frac {1}{\sigma {\sqrt {2\pi }}}}e^{-{\frac {1}{2}}\left({\frac {x-\mu }{\sigma }}\right)^{2}}} The parameter μ {\displaystyle...

also engage in pi bonding. This latter mode forms part of the basis for metal-metal multiple bonding. Pi bonds are usually weaker than sigma bonds. The C-C...

societies were established a century later, including Tau Beta Pi for engineering (1885), Sigma Xi for scientific research (1886), and Phi Kappa Phi for all...

which it resides. Phi Kappa Pi Fraternity was founded in 1913, by two previously existing and separate organizations. Sigma Pi, founded in Toronto in 1901...

Delta Zeta. Merged with Beta Sigma Omicron. Merged with Sigma Sigma Sigma. Originally a Jewish sorority. Merged with Phi Omega Pi. Originally an educational...

1909. Re-established in 1948 by absorbing Pi Chi (local), established in 1947. Chapter formed by absorbing Sigma Omicron. Chapter formed by absorbing 1908...

ΔΣΠ (Delta Sigma Pi) is an American professional business fraternity for men and women. It was founded on November 7, 1907, at the School of Commerce,...

"Gender Inclusion: Resolution" (PDF). Phi Sigma Pi. August 2014. Retrieved February 5, 2023. "History | Phi Sigma Pi National Honor Fraternity". phisigmapi...

Alpha, the Order of the Coif, Phi Beta Kappa, Phi Kappa Phi, Sigma Xi, and Tau Beta Pi. Since that time, more than 65 honors societies have joined ACHS...

fraternity used this building from 1910 to 1922. This building was built for Sigma Pi and was used by fraternities until 1943. The frtaternity sold the house...

economics), Pi Lambda Theta (education), Sigma Sigma Sigma (education), and Theta Sigma Phi (journalism). Two additional fraternities, Sigma Alpha Iota...

was an African-American medical doctor who was one of the founders of Sigma Pi Phi and was Superintendent of the Mercy Hospital of Philadelphia for twenty-four...

members. Beta Theta Pi is the oldest of the three fraternities that formed the Miami Triad, along with Phi Delta Theta and Sigma Chi. Students at Miami...

started at VU, which soon after became the founding ("Alpha") chapter of Sigma PiFraternity, making that organization the first of its kind to be founded...

) . {\displaystyle g(x)={\frac {1}{\sigma {\sqrt {2\pi }}}}\exp \left(-{\frac {1}{2}}{\frac {(x-\mu )^{2}}{\sigma ^{2}}}\right).} Gaussian functions are...

Iota Sigma Pi (ΙΣΠ) is a national honor society in the United States. It was established in 1902 and specializes in the promotion of women in the sciences...

history, three national fraternities merged with Pi Lambda Phi: Phi Beta Delta, Beta Sigma Tau and Beta Sigma Rho. Phi Beta Delta was founded at Columbia University...

Following is a list of notable members of Sigma Pi. Rolin Roscoe James – (October 16, 1879 – February 4, 1953) Graduated from Vincennes University in 1899...

retrieved September 2, 2007 Sigma Pi Fraternity, archived from the original on September 27, 2007, retrieved September 2, 2007 Sigma Pi Fraternity >> Morehead...

Virginia, including the founding of two national fraternities Kappa Sigma (ΚΣ) and Pi Kappa Alpha (ΠΚΑ). Roughly 30% of the student body belongs to a social...