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Functions that qualify as fuzzy intersections and fuzzy unions are referred to as :

  • A.t-norms & t-conorms
  • B.i-norms & v-conorms
  • C.t-norms & i-norms
  • D.None of the above

Answer: A

They are called t-norms and t-conorms.

In fuzzy set theory, a function that can serve as a fuzzy intersection must be a triangular norm (t-norm): commutative, associative, monotonic and with 1 as identity; minimum and the algebraic product are examples. A function that can serve as a fuzzy union must be a triangular conorm (t-conorm, also called s-norm), with 0 as identity; maximum and the algebraic sum are examples.

'i-norms' and 'v-conorms' are not standard terms, and pairing t-norms with i-norms leaves out the unions, so the other options are wrong.

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