Some know “sigma” as the 18th letter of the Greek alphabet but it’s also teen slang for a cool dude. According to Know Your ...

Sigma is also updating its symbol, giving it a "contemporary update." The company says its new way of writing the Greek letter sigma – used in math to notate a summation – is meant to ...

Sigma Chi is the largest and one of the oldest college Greek-letter secret and social fraternities in North America. Sigma Chi was founded on June 28, 1855 at Miami University in Oxford, Ohio when ...

Sigma Alpha Epsilon is a Greek-letter social college fraternity founded at the University of Alabama on March 9, 1856. Of all existing national social fraternities today, Sigma Alpha Epsilon is the ...