Definition

A definition is a statement of the meaning of a term (a word, phrase, or other set of symbols). Definitions can be classified into two large categories, intensional definitions (which try to give the essence of a term) and extensional definitions (which list every single object that a term describes). A term may have many different senses and multiple meanings, and thus require multiple definitions.

In mathematics, a definition is used to give a precise meaning to a new term, instead of describing a pre-existing term. Definitions and axioms are the basis on which all of mathematics is constructed.

Intensional definitions vs extensional definitions

An Intensional definition, also called a connotative definition, specifies the necessary and sufficient conditions for a thing being a member of a specific set. Any definition that attempts to set out the essence of something, such as that by genus and differentia, is an intensional definition.

An extensional definition, also called a denotative definition, of a concept or term specifies its extension. It is a list naming every object that is a member of a specific set.

Day trading

Day trading is speculation in securities, specifically buying and selling financial instruments within the same trading day. Strictly, day trading is trading only within a day, such that all positions are closed before the market closes for the trading day. Many traders may not be so strict or may have day trading as one component of an overall strategy. Traders who participate in day trading are called day traders. Traders who trade in this capacity with the motive of profit are therefore speculators.

Some of the more commonly day-traded financial instruments are stocks, options, currencies, and a host of futures contracts such as equity index futures, interest rate futures, and commodity futures.

Day trading was once an activity that was exclusive to financial firms and professional speculators. Many day traders are bank or investment firm employees working as specialists in equity investment and fund management. However, with the advent of electronic trading and margin trading, day trading has become more common.

Kevin Gates

Kevin Jerome Gilyard (born February 5, 1986), known by his stage name Kevin Gates, is an American rapper, singer, and entrepreneur from Baton Rouge, Louisiana.

Early life

Born Kevin Jerome Gilyard, Gates was born in New Orleans and raised in Baton Rouge, Louisiana. Growing up Gates often listened to rappers such as Master P and Hot Boy$. Gates started rapping at 14 years old. Later with Boosie Badazz, and Webbie.

Career

Kevin first began rhyming in 2007, when he began making music with fellow Louisiana natives Webbie and Lil Boosie. Gates first received attention with his 2008 single "Get in the Way" featuring Lil Boosie. Soon after, he and Boosie would be incarcerated in separate cases. Gates would then be released in 2011 and immediately returned to recording music. He would soon earn the attention of Lil Wayne and would start being managed by Young Money Entertainment's management wing. In early 2013, Gates released a mixtape, The Luca Brasi Story which was called "easily the best rap-related thing" in February 2013 by Spin Magazine, who also said he has "been a rapper to watch for a few years now".The Luca Brasi Story has been downloaded from popular mixtape sharing site, DatPiff, over 274,000 times. On February 15, 2013, it was announced that Kevin Gates is in a partnership with Atlantic Records. Gates was also featured on Pusha T's 2013 mixtape Wrath of Caine on the song "Trust You" and was featured on frequent collaborator Gudda Gudda's mixtape Guddaville 3 on the song "Hustle All Day" also featuring Flow.

Mos Def

Yasiin Bey (/jæˈsiːn ˈbeɪ/; born Dante Terrell Smith Bey; December 11, 1973), better known by his former stage name Mos Def (/ˈmoʊs ˈdɛf/), is an American hip hop recording artist, actor, comedian, and activist from Brooklyn, New York City, New York. Best known for his music, Bey embarked on his hip hop career in 1994, alongside his siblings in the short-lived rap group Urban Thermo Dynamics (UTD), after which he appeared on albums by Da Bush Babees and De La Soul. He subsequently formed the trio Black Star, alongside fellow Brooklyn-based rapper Talib Kweli, and Cincinnati producer Hi-Tek and released their eponymous debut album in 1998. He was a major force in late-1990s underground hip hop while under Rawkus Records. In 1999, Bey released his solo debut, Black on Both Sides, under Rawkus and Priority Records. His debut was followed by The New Danger (2004), True Magic (2006) and The Ecstatic (2009).

Prior to his career in music, Bey first entered public life as a child actor, having played roles in television movies, sitcoms, and theater, some of which were under the name Dante Beze. At the age of 14, he appeared in the TV movie God Bless the Child, which aired on ABC in 1988. He played the oldest child in the 1990 family sitcom You Take the Kids, shortly before it was cancelled. In 1995, he played the character "Dante" in The Cosby Mysteries. Since the early 2000s, Bey has been well known for his roles in films such as Something the Lord Made, Next Day Air, The Hitchhiker's Guide to the Galaxy, 16 Blocks, Be Kind Rewind, The Italian Job, Bamboozled and Brown Sugar, as well as for his portrayal of Brother Sam in the Showtime drama series Dexter. He is also known as the host of Def Poetry Jam, which aired on HBO between 2002 and 2007.

Talib Kweli

Talib Kweli Greene (born October 3, 1975) is an American hip hop recording artist, entrepreneur, and social activist. He is the son of professional educators. In 2011, Kweli founded Javotti Media, which is self-defined as "a platform for independent thinkers and doers. " Kweli earned recognition early on through his work with fellow Brooklyn artist, Yasiin Bey, formerly known as Mos Def, when they formed the group Black Star. Kweli's career continued with solo success including collaborations with famed producers Kanye West, Just Blaze, and Pharrell Williams. Kweli is known to support artists on the rise, such as J. Cole, Jay Electronica, Kendrick Lamar, and NIKO IS.

Early life

Born in Brooklyn, New York, Kweli grew up in a household in Park Slope. His mother, Brenda Greene, is an English professor at Medgar Evers College of the City University of New York and his father an administrator at Adelphi University. His younger brother, Jamal Greene, is a professor of Constitutional Law at Columbia Law School, a graduate of Yale Law School, and former clerk to Justice John Paul Stevens on the Supreme Court. As a youth, he was drawn to Afrocentric rappers, such as De La Soul and other members of the Native Tongues Posse whom he had met in high school. Kweli was a student at Cheshire Academy, a boarding school in Connecticut. He was previously a student at Brooklyn Technical High School before being academically dismissed. He later studied experimental theater at New York University.