About: Witness (mathematics)

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In mathematical logic, a witness is a specific value t to be substituted for variable x of an existential statement of the form ∃x φ(x) such that φ(t) is true.

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  • In mathematical logic, a witness is a specific value t to be substituted for variable x of an existential statement of the form ∃x φ(x) such that φ(t) is true. (en)
  • Em lógica matemática, uma testemunha é um determinado valor de t para ser substituído pela variável x de uma afirmação existencial da forma ∃x φ(x) tal que φ(t) é verdadeira. (pt)
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  • In mathematical logic, a witness is a specific value t to be substituted for variable x of an existential statement of the form ∃x φ(x) such that φ(t) is true. (en)
  • Em lógica matemática, uma testemunha é um determinado valor de t para ser substituído pela variável x de uma afirmação existencial da forma ∃x φ(x) tal que φ(t) é verdadeira. (pt)
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  • Testemunha (matemática) (pt)
  • Witness (mathematics) (en)
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