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List of paradoxes. Outline of public relations – Overview of and topical guide to public relations. Map–territory relation – Relationship between an object and a representation of that object (confusing map with territory, menu with meal) Mathematical fallacy – Certain type of mistaken proof.
Then P(n) is true for all natural numbers n. For example, we can prove by induction that all positive integers of the form 2n − 1 are odd. Let P(n) represent " 2n − 1 is odd": (i) For n = 1, 2n − 1 = 2 (1) − 1 = 1, and 1 is odd, since it leaves a remainder of 1 when divided by 2. Thus P(1) is true.
Chinese hypothesis (not a conjecture to start with) Doomsday conjecture. Euler's sum of powers conjecture. Ganea conjecture. Generalized Smith conjecture. Hauptvermutung. Hedetniemi's conjecture, counterexample announced 2019 [20] Hirsch conjecture (disproved in 2010) Intersection graph conjecture.
Paradox. A paradox is a logically self-contradictory statement or a statement that runs contrary to one's expectation. [1][2] It is a statement that, despite apparently valid reasoning from true or apparently true premises, leads to a seemingly self-contradictory or a logically unacceptable conclusion. [3][4] A paradox usually involves ...
Argument from ignorance. Argument from ignorance (from Latin: argumentum ad ignorantiam), also known as appeal to ignorance (in which ignorance represents "a lack of contrary evidence"), is a fallacy in informal logic. The fallacy is committed when one asserts that a proposition is true because it has not yet been proven false or a proposition ...
Formal proof. In logic and mathematics, a formal proof or derivation is a finite sequence of sentences (known as well-formed formulas when relating to formal language), each of which is an axiom, an assumption, or follows from the preceding sentences in the sequence, according to the rule of inference. It differs from a natural language ...
Premise. A premise or premiss[a] is a proposition —a true or false declarative statement—used in an argument to prove the truth of another proposition called the conclusion. [1] Arguments consist of a set of premises and a conclusion. An argument is meaningful for its conclusion only when all of its premises are true.
Defining fake news. Fake news is false or misleading information presented as news. [8][14] The term as it developed in 2017 is a neologism (a new or re-purposed expression that is entering the language, driven by culture or technology changes). [15]