Semiprojection

Quick meaning: Semiprojection is a noun meaning (mathematics) A function f of rank k, where k is greater than or equal to three, such that for some index i between one and k (inclusive), f(x₁, x₂, ... xₖ) = xᵢ whenever |{x₁, x₂, ... xₖ}| < k.

Meaning

(mathematics) A function f of rank k, where k is greater than or equal to three, such that for some index i between one and k (inclusive), f(x₁, x₂, ... xₖ) = xᵢ whenever |{x₁, x₂, ... xₖ}| < k.

Example Sentences

Let f be the semiprojection defined by the bitransitive relation R. Then [f] is a minimal clone.

We now show that closure under a semiprojection operation is not in general a sufficient condition for tractability.

Word Forms

• semiprojections

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