Results 221 to 230 of about 265,994 (263)

Problems complete for ⊕L

Information Processing Letters, 1990
Abstract ⊕ L is the class of languages acceptable by logarithmic space bounded Turing machines that work nondeterministically and are equipped with parity-acceptance. Several natural problems are shown to be complete for ⊕ L under NC1-reductions. A consequence is that ⊕ L is the 2-analogon of Cook's class DET, the class of problems NC1-reducible ...
openaire   +1 more source

P-Complete Approximation Problems

Journal of the ACM, 1976
For P-complete problems such as traveling salesperson, cycle covers, 0-1 integer programming, multicommodity network flows, quadratic assignment, etc., it is shown that the approximation problem is also P-complete. In contrast with these results, a linear time approximation algorithm for the clustering problem is presented.
Sartaj Sahni, Teofilo F. Gonzalez
openaire   +2 more sources

On the optional hamiltonian completion problem

Networks, 1976
AbstractThe Optional Hamiltonian Completion Problem is defined as follows: let the points V of a graph G be partitioned into a set V0 of optional points and a set V1 of non‐optional points; determine the minimum number of new lines which when added to G result in a graph which has a cycle containing every point of V1.
Peter J. Slater   +2 more
openaire   +2 more sources

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