Question: K Theory is an electronic hip-hop act by who, they have done official remixes for Dequantes Devontay Lamar, an American singer, rapper and songwriter from Atlanta, Georgia, better known by his stage name Rich Homie Quan?

Context articles: Dun Deal
I Am (Yo Gotti album)
My Krazy Life
Rich Homie Quan
K Theory
Jacquees
Boss Yo Life Up Gang
My Nigga
Downtown: Life Under the Gun
London On Da Track

David Cunningham (born August 22, 1986), better known by his stage name Dun Deal, is an American record producer and rapper from Atlanta, Georgia.
 He is best known for producing A$AP Mob's hit single "RAF" Young Thug's single "Stoner" and Migos' single "Hannah Montana".
 Cunningham has also worked with Gucci Mane, Usher, Trey Songz, Future, Drake, Rich Homie Quan, and Kevin Gates, among others.
I Am is the seventh studio album by American hip hop recording artist Yo Gotti.
 The album was released on November 19, 2013, by Epic and CMG.
 The album features guest appearances from T.I., Ne-Yo, Wale, Rich Homie Quan, J. Cole, Jeezy, Meek Mill, and YG, among others.
 The album was supported by the singles "Act Right" featuring YG and Jeezy, "King Shit" featuring T.I., "Cold Blood" featuring J. Cole and Canei Finch, and "I Know" featuring Rich Homie Quan.
 The first and fourth singles were later certified gold by the RIAA.
My Krazy Life is the debut studio album by American rapper YG.
 It was released on March 18, 2014, by Pu$haz Ink, CTE World and Def Jam Recordings.
 Recording sessions took place from 2012 to 2014 in various recording studios, mostly from Atlanta, Georgia to Los Angeles, California.
 The album features guest appearances from Kendrick Lamar, Drake, Lil Wayne, Nicki Minaj, Rich Homie Quan, Ty Dolla Sign, Schoolboy Q, Meek Mill, Jay Rock, Jeezy, TeeFlii and RJ, while the production was primarily handled by frequent collaborator DJ Mustard, along with production from Ty Dolla Sign and Terrace Martin.
Dequantes Devontay Lamar (born October 4, 1989) better known by his stage name Rich Homie Quan, is an American singer, rapper and songwriter from Atlanta, Georgia.
 He is signed to independent label T.I.G. Entertainment and Motown Records.
 Rich Homie Quan was influenced by dirty south rap, including Young Jeezy, Gucci Mane, T.I., Lil Boosie, Lil Wayne, Kilo Ali, Outkast, and Goodie Mob.
 He has collaborated with Atlanta artists such as Young Thug and Birdman.
K Theory is an electronic hip-hop act by Dylan Lewman, which formerly included Dustin Musser and Malcolm Anthony.
 The group was founded by Dylan Lewman and Dustin Musser in 2011.
 They have done official remixes for Flo Rida's "GDFR", Rich Homie Quan's "Flex", Fetty Wap's "Trap Queen", and many more songs.
 Their remixes and originals have over to 100 millions plays across all platforms.
Rodriquez Jacquees Broadnax, better known by his stage name Jacquees, is an American singer-songwriter from Atlanta, Georgia.
 Seeing the recognition as a solo artist, Jacquees also worked with artists, such as T.I., Travis Porter, Ty Dolla $ign, Rich Homie Quan, Young Thug, Trinidad James, Quavo, August Alsina and Chris Brown, among others.
 In 2014, Jacquees signed a recording & management contract with Cash Money Records.
Boss Yo Life Up Gang is a compilation mixtape by American rapper Young Jeezy's record label CTE World.
 The mixtape was released for free on August 13, 2013, by CTE World.
 The mixtape featured guest appearances by Nipsey Hussle and Rich Homie Quan.
 The mixtape was supported by two singles; "My Nigga" by YG featuring Young Jeezy and Rich Homie Quan, and "Mobb Life" by Doughboyz Cashout also featuring Jeezy.
"My Nigga" (edited version titled as "My Hitta") is a song by American rapper YG, released on September 17, 2013, as the lead single from his debut studio album "My Krazy Life" (2014).
 The song, produced by frequent collaborator DJ Mustard, features guest appearances from CTE World founder Jeezy, and Rich Homie Quan.
 The song was written by Keenon Jackson, Dijon McFarlane, Mikely Adam, Jay Jenkins, Dequantes Lamar, Snoop Dogg, Awood Johnson, Craig Lawson, and Corey Miller.
 It interpolates "The Sky is the Limit", as written and performed by Lil Wayne as well as the popular refrain from C-Murder's single "Down 4 My Niggaz".
Downtown: Life Under the Gun is the debut EP by American recording artist August Alsina.
 The album was released on August 20, 2013, by Radio Killa Records and Def Jam Recordings.
 The album features guest appearances from Kidd Kidd, Trinidad James, Currensy and Rich Homie Quan.
 The album was supported by two official singles; "I Luv This Shit" and "Ghetto" featuring Rich Homie Quan.
London Holmes (born March 27, 1991), better known by his stage name London On Da Track, is an American record producer, songwriter and former rapper from Atlanta, Georgia.
 He is a frequent collaborator of fellow Atlanta rapper Young Thug and has also worked with Birdman, Kodak Black, Waka Flocka Flame, Rich Homie Quan, Gucci Mane, Drake, T.I., 21 Savage, Travis Porter, Rich Kidz and 50 Cent.
 He has also worked with 2 Chainz, producing and writing for the track Section on the 2016 Lil Wayne collaboration album, ColleGrove.