In mathematics, a complex number is an element of a number system that extends the real numbers with a specific element denoted i, called the imaginary unit and satisfying the equation ; every complex number can be expressed in the form , where a and b are real numbers. Because no real number satisfies the above equation, i was called an imaginary number by René Descartes. For the complex number , a is called the real part, and b is called the imaginary part. The set of complex numbers is denoted by either of the symbols or C. Despite the historical nomenclature "imaginary", complex numbers are regarded in the mathematical sciences as just as "real" as the real numbers and are fundamental in many aspects of the scientific description of the natural world.
Rhythm and blues, frequently abbreviated as R&B or R'n'B, is a genre of popular music that originated in African-American communities in the 1940s. The term was originally used by record companies to describe recordings marketed predominantly to African Americans, at a time when "rocking, jazz based music ... [with a] heavy, insistent beat" was becoming more popular. In the commercial rhythm and blues music typical of the 1950s through the 1970s, the bands usually consisted of a piano, one or two guitars, bass, drums, one or more saxophones, and sometimes background vocalists. R&B lyrical themes often encapsulate the African-American experience of pain and the quest for freedom and joy, as well as triumphs and failures in terms of relationships, economics, and aspirations.
Joseph Lewis Thomas, known mononymously as Joe, is an American R&B singer-songwriter and record producer. He signed to Polygram Records in 1992, and rose to prominence after releasing his debut album Everything the following year. He followed it with a series of successful albums under Jive Records, including All That I Am (1997), the international bestseller My Name Is Joe (2000) as well as the multi-certified albums Better Days (2001) and And Then... (2003). Several songs from these albums became hit singles on the pop and R&B record charts, including the number-one hit "Stutter", the top ten entries "All the Things ", "Don't Wanna Be a Player", and "I Wanna Know" as well as his collaborations "Faded Pictures", "Thank God I Found You" and "Still Not a Player".
Tony! Toni! Toné! is an American soul/R&B band from Oakland, California, popular during the late 1980s and early to mid-1990s. During the band's heyday, it was composed of D'wayne Wiggins on lead vocals and guitar, his brother Raphael Saadiq on lead vocals and bass, and their cousin Timothy Christian Riley on drums, keyboards, and background vocals. Originally, the band went by "Tony, Toni, Toné" as a joke, until they realized it "had a nice ring to it".
K-Ci & JoJo is an American R&B duo, consisting of brothers Cedric "K-Ci" Hailey and Joel "JoJo" Hailey. Natives of Charlotte, North Carolina, they are also the lead singers of the chart-topping R&B group Jodeci with the DeGrate brothers—Donald and Mr. Dalvin. They are known for the 1997 smash hit "All My Life" which was the number-one song on the Billboard Hot 100 for three weeks. They also achieved mainstream success with the 1999 hit "Tell Me It's Real", which peaked at #2 on the Hot 100. Their 2001 song "Crazy" was included on the Save the Last Dance soundtrack and peaked at number eleven on the Billboard Hot 100.
Donell Jones is an American singer, songwriter, and record producer. He is most notable for the hits "U Know What's Up", "Where I Wanna Be", and his cover of Stevie Wonder's "Knocks Me Off My Feet". Jones' first studio album My Heart, was released in 1996, but he is best known for his late 1990s release of his second album Where I Wanna Be.
R. Kelly is the eponymously-titled second studio album by American R&B singer-songwriter R. Kelly. It was released on November 14, 1995, by Jive Records. The production was handled entirely by Kelly himself. It spawned three number one R&B singles: "You Remind Me of Something", "Down Low " and "I Can't Sleep Baby ".
Gerald Maxwell Rivera, known mononymously as Maxwell, is an American singer, songwriter, and record producer. He rose to prominence following the release of his debut studio album Maxwell's Urban Hang Suite (1996), which received widespread acclaim, and spawned the singles "Ascension " and "Sumthin' Sumthin'". The album has since been cited by music critics for helping form the "neo soul" movement that gained popularity during the late 1990s.
Waiting to Exhale: Original Soundtrack Album is a soundtrack for the film of the same name, released on November 14, 1995, by Arista Records. Written and produced by Babyface, the soundtrack features appearances by several prominent R&B artists, including Whitney Houston, Toni Braxton, TLC, Brandy, Aretha Franklin, Chaka Khan, Faith Evans, Patti LaBelle, SWV and Mary J. Blige. The album remained at number one on the US Billboard 200 album chart for five weeks and Top R&B Albums chart for ten weeks, going 7× platinum, on September 4, 1996. It spawned two number-one hits on the US Billboard Hot 100 chart; "Exhale " and "Let It Flow", and three top-ten hits, "Sittin' Up in My Room", "Not Gon' Cry" and "Count on Me". "Exhale ", "Let It Flow" and "Not Gon' Cry" also topped the R&B hits chart. All songs were written and produced by Babyface, except for "My Funny Valentine". The album also includes songs by lesser-known artists like Shanna and Sonja Marie.
"Down Low (Nobody Has to Know)" is an R&B song about infidelity by American singer and songwriter R. Kelly featuring The Isley Brothers, released in 1995 from Kelly's second and self-titled album (1995). The song peaked at number four on the Billboard Hot 100 and number one on the Billboard R&B Singles Chart for seven weeks, making it Kelly's fifth single to do so on the latter. It also gave the Isley Brothers their first Top 40 pop record since 1980's "Don't Say Goodnight (It's Time For Love)", and was Kelly's third top 5 pop record. The lyrics are from the perspective of a man who has an affair with another man's woman and tells her to keep their relationship a closely guarded secret.
"I Can't Sleep Baby (If I)" is a single by American R&B singer R. Kelly from his 1995 eponymous album. The song spent two weeks at number one on the US Billboard Hot R&B Singles chart (Kelly's sixth number-one R&B hit) and peaked at number five on the Billboard Hot 100. Outside the US, the single reached the top 20 in New Zealand, peaking at number 14.
"You Remind Me of Something" is a song by American R&B singer R. Kelly. Released as the lead single from his self-titled album (1995), it became the fourth song from Kelly to reach number one on the US Billboard Hot R&B Singles chart, where it stayed for a week, and peaked at number four on the Billboard Hot 100. Worldwide, it peaked at number 13 in New Zealand and found moderate success in the Netherlands and the United Kingdom.
In mathematics, a real number is a number that can be used to measure a continuous one-dimensional quantity such as a distance, duration or temperature. Here, continuous means that pairs of values can have arbitrarily small differences. Every real number can be almost uniquely represented by an infinite decimal expansion.
This is a list of the number-one albums of the UK R&B Singles and Albums Charts.
"Let It Flow" is a song by American R&B singer Toni Braxton. Written and produced by Babyface, the song was originally recorded for, and included on, the soundtrack to the 1995 motion picture Waiting to Exhale.