Sigma Pi (ΣΠ) is a collegiate fraternity in North America. As of 2021, it had more than 5,000 undergraduate members and over 118,000 alumni. The fraternity...

Sigma Pi Phi (ΣΠΦ), also known as The Boulé, is an African American professional fraternity. Founded in Philadelphia, Pennsylvania, in 1904, it is the...

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

Sigma Pi Sigma (ΣΠΣ) is an American honor society for physics and astronomy. It was founded at Davidson College in Davidson, North Carolina on December...

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

Sigma Pi Phi, also known as The Boulé, is an African American professional fraternity. Founded in Philadelphia, Pennsylvania, in 1904, it is the oldest...

Two Sigma Investments, LP is an American hedge fund headquartered in New York City. It uses a variety of technological methods, including artificial intelligence...

following year. In 1946, the chapter absorbed members of the Sigma chapter of Alpha Kappa Pi, at the merger of the two fraternities. This chapter formed...

Sigma Pi Phi is an African American professional fraternity. Founded in Philadelphia, Pennsylvania,in 1904, it is the oldest Greek lettered fraternity...

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

Sigma Pi (ΣΠ) is one of the four male literary societies of Illinois College. It is the oldest literary society at Illinois College and one of the oldest...

This article lists the chapters of Sigma Pi fraternity. They are listed by the chapter's charter year, along with their Greek-letter designation and the...

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...

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

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...

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...

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...

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...

{\displaystyle E_{k}=\alpha +2\beta '\cos {\frac {(2k+1)\pi }{N}},\ \beta '=\beta \cos(\pi /N)\quad (k=0,1,\ldots ,\lceil N/2\rceil -1)} . Energy levels...

Alpha, the Order of the Coif, Phi Beta Kappa, Phi Kappa Phi, Sigma Xi, and Tau Beta Pi. The Association of College Honor Societies (ACHS) was formed...

Iota Sigma Pi (ΙΣΠ) is a national honor society in the United States. It was established in 1900 and specializes in the promotion of women in the sciences...

Sigma Pi Sigma is an American honor society for physics and astronomy. It was founded at Davidson College in Davidson, North Carolina on December 11, 1921...

Forum of Mathematics, Pi and Forum of Mathematics, Sigma are open-access peer-reviewed journals for mathematics published under a creative commons license...

professional fraternity is Sigma Alpha Iota (both relating to music) with the oldest social sorority being Sigma Sigma Sigma. As of the spring 2016 semester...

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...

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,...

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...

Pi Kappa Sigma (ΠΚΣ or Pi Kap) was an American national collegiate sorority. Established in 1894 at the Michigan State Normal School, it was the first...

{1}{\alpha (\sigma +{\pi /2})}}\left(\tan {\frac {\pi \alpha }{2}}\exp {\frac {\pi \mu }{2\sigma }}\right)^{2\sigma /\pi }\tan {\frac {\pi \alpha }{2}}{_{2}F_{1}}\left(1...

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...