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Khan Academy is an American non-profit [3] educational organization created in 2006 by Sal Khan. [1] Its goal is to create a set of online tools that help educate students. [ 4 ] The organization produces short video lessons. [ 5 ]
The following other wikis use this file: Usage on ar.wikipedia.org أكاديمية خان; Usage on as.wikipedia.org খান একাডেমী
In mathematics, certain kinds of mistaken proof are often exhibited, and sometimes collected, as illustrations of a concept called mathematical fallacy.There is a distinction between a simple mistake and a mathematical fallacy in a proof, in that a mistake in a proof leads to an invalid proof while in the best-known examples of mathematical fallacies there is some element of concealment or ...
Formally, the right Kan extension of along consists of a functor : and a natural transformation : that is couniversal with respect to the specification, in the sense that for any functor : and natural transformation :, a unique natural transformation : is defined and fits into a commutative diagram:
The notion of a knot has further generalisations in mathematics, see: Knot (mathematics), isotopy classification of embeddings. Every knot in the n -sphere S n {\displaystyle \mathbb {S} ^{n}} is the link of a real-algebraic set with isolated singularity in R n + 1 {\displaystyle \mathbb {R} ^{n+1}} ( Akbulut & King 1981 ).
At the age of 11, he scored a 780 out of a possible 800 on the math portion of the SAT-I exam. [1] At the age of 13, he became the youngest person ever to make the United States International Mathematical Olympiad team [ 2 ] He participated in the Olympiad four times, winning silver medals in 1983 and 1984, and gold medals in 1985 and 1986.
In the vernacular, this form of rhetorical question is called "rhetorical affirmation". The certainty or obviousness of the answer to a question is expressed by asking another, often humorous, question for which the answer is equally obvious. Popular examples include "Do bears shit in the woods?", "Is the sky blue?" and "Is the Pope Catholic?"
The Kobayashi Maru test was invented for the 1982 film Star Trek II: The Wrath of Khan, and it has since been referred to and depicted in numerous other Star Trek media. The nominal goal of the exercise is to rescue the civilian fuel ship Kobayashi Maru , which is damaged and stranded in neutral territory between the Federation and the Klingon ...