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Fact-checking can be conducted before or after the text or content is published or otherwise disseminated. Internal fact-checking is such checking done in-house by the publisher to prevent inaccurate content from being published; when the text is analyzed by a third party, the process is called external fact-checking. [1]
A sentence can be viewed as expressing a proposition, something that must be true or false. The restriction of having no free variables is needed to make sure that sentences can have concrete, fixed truth values : as the free variables of a (general) formula can range over several values, the truth value of such a formula may vary.
The corresponding conditional of a valid argument is a logical truth and the negation of its corresponding conditional is a contradiction. The conclusion is a necessary consequence of its premises. An argument that is not valid is said to be "invalid". An example of a valid (and sound) argument is given by the following well-known syllogism:
"Statistical proof" from data refers to the application of statistics, data analysis, or Bayesian analysis to infer propositions regarding the probability of data. While using mathematical proof to establish theorems in statistics, it is usually not a mathematical proof in that the assumptions from which probability statements are derived ...
Questionable sources are those that have a poor reputation for checking the facts, lack meaningful editorial oversight, or have an apparent conflict of interest. Such sources include websites and publications expressing views widely considered by other sources to be promotional, extremist, or relying heavily on unsubstantiated gossip, rumor, or ...
Given any number , we seek to prove that there is a prime larger than . Suppose to the contrary that no such p exists (an application of proof by contradiction). Then all primes are smaller than or equal to n {\displaystyle n} , and we may form the list p 1 , … , p k {\displaystyle p_{1},\ldots ,p_{k}} of them all.
How pass-through FDIC insurance works. Pass-through FDIC insurance covers deposits a third party makes in your name at an FDIC-insured bank. Third parties are anyone who acts on your behalf, such ...
A statement may fail to adequately convey the state of affairs regarding some topic, without that statement being an actual lie. In other cases, accuracy itself is under dispute: a certain question may indeed have a true answer, but nobody knows what it is yet, so a lack of complete information leads to people supporting a variety of possible ...