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  2. Substantially equal periodic payments - Wikipedia

    en.wikipedia.org/wiki/Substantially_equal...

    [2] The interest rate that can be used in the latter two calculations can be any rate up to 5% per annum, or up to 120% of the Applicable Federal Mid Term rate (AFR) for either of the two months prior to the calculation. [2] SEPP payments must continue for the longer of five years or until the account owner reaches 59 12. [2]

  3. Travelling salesman problem - Wikipedia

    en.wikipedia.org/wiki/Travelling_salesman_problem

    The travelling purchaser problem, the vehicle routing problem and the ring star problem [1] are three generalizations of TSP. The decision version of the TSP (where given a length L, the task is to decide whether the graph has a tour whose length is at most L) belongs to the class of NP-complete problems.

  4. Thrift Savings Plan - Wikipedia

    en.wikipedia.org/wiki/Thrift_Savings_Plan

    Also, if an employee has multiple TSP accounts, s/he can withdraw from any related to active employment (civilian or "Ready Reserve") but cannot withdraw from an inactive one (e.g., former military service). An employee must be over age 59 + 12 to request an "age-based" withdrawal and need not specify any reason for doing so. Employees may ...

  5. Christofides algorithm - Wikipedia

    en.wikipedia.org/wiki/Christofides_algorithm

    The union of the tree and the matching is a cycle, with no possible shortcuts, and with weight approximately 3n/2. However, the optimal solution uses the edges of weight 1 + ε together with two weight-1 edges incident to the endpoints of the path, and has total weight (1 + ε)(n − 2) + 2, close to n for small values of ε. Hence we obtain an ...

  6. Bottleneck traveling salesman problem - Wikipedia

    en.wikipedia.org/wiki/Bottleneck_traveling...

    In an asymmetric bottleneck TSP, there are cases where the weight from node A to B is different from the weight from B to A (e. g. travel time between two cities with a traffic jam in one direction). The Euclidean bottleneck TSP, or planar bottleneck TSP, is the bottleneck TSP with the distance being the ordinary Euclidean distance. The problem ...

  7. Karp's 21 NP-complete problems - Wikipedia

    en.wikipedia.org/wiki/Karp's_21_NP-complete_problems

    In computational complexity theory, Karp's 21 NP-complete problems are a set of computational problems which are NP-complete.In his 1972 paper, "Reducibility Among Combinatorial Problems", [1] Richard Karp used Stephen Cook's 1971 theorem that the boolean satisfiability problem is NP-complete [2] (also called the Cook-Levin theorem) to show that there is a polynomial time many-one reduction ...

  8. List of NP-complete problems - Wikipedia

    en.wikipedia.org/wiki/List_of_NP-complete_problems

    Feedback arc set [2] [3]: GT8 Graph coloring [2] [3]: GT4 Graph homomorphism problem [3]: GT52 Graph partition into subgraphs of specific types (triangles, isomorphic subgraphs, Hamiltonian subgraphs, forests, perfect matchings) are known NP-complete. Partition into cliques is the same problem as coloring the complement of the

  9. Steiner travelling salesman problem - Wikipedia

    en.wikipedia.org/wiki/Steiner_travelling...

    The Steiner traveling salesman problem (Steiner TSP, or STSP) is an extension of the traveling salesman problem. Given a list of cities, some of which are required, and the lengths of the roads between them, the goal is to find the shortest possible walk that visits each required city and then returns to the origin city. [ 1 ]