The cardinal-inequality realization conjecture for graphs
The cardinal-inequality realization conjecture for graphs
An algorithm is a procedure that takes an input and may terminate or run forever, and is an input to such an algorithm. A graph with cardinal inequalities is a graph equipped with cardinal inequalities between its vertices; it is realizable when it has a model satisfying those constraints.
Cardinal-inequality realization conjecture. For every algorithm and input , there exists a graph with cardinal inequalities such that
The surrounding discussion places this claim in the context of Hilbert's Tenth problem: realizability for graphs with cardinal constraints of the form is stated to be undecidable because it is reducible to HTP. The proposed equivalence would give a direct realization of termination behavior by such graph instances; no resolution is supplied in the source.
Sources & referencesView supporting material
Primary source
Domenico Cantone and Pietro Ursino, “Hilbert's Tenth problem and NP-completeness of Boolean Syllogistic with unordered cartesian product”, arXiv:2101.00198 (2021).
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