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Creators/Authors contains: "Yokoyama, Keita"

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  1. ; ; (, Computability)
    We introduce the notion of the first-order part of a problem in the Weihrauch degrees. Informally, the first-order part of a problem P is the strongest problem with codomaixn ω that is Weihrauch reducible to P. We show that the first-order part is always well-defined, examine some of the basic properties of this notion, and characterize the first-order parts of several well-known problems from the literature. 
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  2. ; ; ; ; ; (, Computability)
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