Quadrant may refer to:

William C. Cobham (born May 16, 1944 in Panama) is a Panamanian American jazz drummer, composer and bandleader, who permanently relocated to Switzerland during the late 1970s.

Coming to prominence in the late 1960s and early 1970s with trumpeter Miles Davis and then with Mahavishnu Orchestra, Allmusic's reviewer claims Cobham is "generally acclaimed as fusion's greatest drummer with an influential style that combines explosive power and exacting precision.

Born in Panama, Cobham's family moved to New York City during his early childhood. A drummer from his youth, Cobham attended New York's High School of Music and Art, graduating in 1962.

He played in a U.S. Army Band from 1965 to 1968. Following his discharge, Cobham joined an ensemble led by pianist Horace Silver for about a year, also playing or recording with saxophonist Stanley Turrentine, organist Shirley Scott, and guitarist George Benson.

Cobham branched out to jazz fusion, which blended elements of jazz, rock and roll and funk, playing and recording with the Brecker Brothers (notably in their 1970-founded group Dreams), and guitarist John Abercrombie, before recording and touring extensively with trumpeter Miles Davis. Cobham's work with Davis appears on A Tribute to Jack Johnson, among other recordings. Cobham is also one of the first drummers to play open-handed lead: a drummer that plays on a right-handed set but leads with his left hand on the hi-hat instead of crossing over with his right (and also has his ride cymbal on the left side, instead of the traditional right). He typically plays with multiple toms and double bass drums and was well known in the '70s for his large drum kits.

Thomas Richard "Tommy" Bolin (August 1, 1951 – December 4, 1976) was an American-born guitarist who played with Zephyr (from 1969 to 1971), The James Gang (from 1973 through 1974), and Deep Purple (from 1975 to 1976).

Tommy Bolin was born in Sioux City, Iowa and began playing in bands around the city as a youth ("A Patch of Blue" and others) before moving to Boulder, Colorado, in his late teens. He had played in a band called American Standard before joining Ethereal Zephyr, a band named after a train that ran between Denver and Chicago. When record companies became interested, the name was shortened to Zephyr. This band included Bolin on guitar, David Givens on bass, and Givens' wife Candy Givens on vocals. The band had begun to do larger venues, opening for more established acts such as Led Zeppelin. Their second album, entitled Going Back to Colorado, featured a new drummer, Bobby Berge, who would pop up from time to time in musician credits in album liner notes from Bolin's later projects.

Robert Toru Kiyosaki (born April 8, 1947) is an American investor, businessman, self-help author, motivational speaker, financial literacy activist, and occasional financial commentator. Kiyosaki is perhaps best known for his Rich Dad Poor Dad series of motivational books and other material published under the Rich Dad brand. He has written over 15 books which have combined sales of over 26 million copies. Although beginning as a self-publisher, he was subsequently published by Warner Books, a division of Hachette Book Group USA. His new books appear under the Rich Dad Press imprint. Three of his books, Rich Dad Poor Dad, Rich Dad's CASHFLOW Quadrant, and Rich Dad's Guide to Investing, have been on number one on the top 10 best-seller lists simultaneously on The Wall Street Journal, USA Today and the New York Times. Rich Kid Smart Kid was published in 2001, with the intent to help parents teach their children financial concepts. He has created three "Cashflow" board and software games for adults and children and has a series of "Rich Dad" CDs and disks.