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Subspaces that minimize the condition number of a matrix
Matrix the condition number subspace subspace
2015/8/10
We define the condition number of a nonsingular matrix on a subspace, and consider the problem of finding a subspace of given dimension that minimizes the condition number of a given matrix. We give a...
Online over time scheduling on unbounded p-batch machines to minimize the makespan: A survey
operation sresearch online scheduling parallel-batch machines makespan competitive ratio
2011/11/14
Online scheduling is a rapidly developed branch in scheduling theory. In the research of online scheduling, makespan minimization on unbounded parallel-batch machines is a fruitful area. In this paper...
Complexity of minimize total weighted average completion time scheduling problems with release times
flow-shop scheduling problem transportation delays
2010/9/20
The paper considers the problem of scheduling n jobs in a two-machine flow-shop to minimize the weighted sum of completion times. Between the completion of an operation and the beginning of the next o...
Point sets that minimize $(\le k)$-edges, $3$-decomposable drawings, and the rectilinear crossing number of $K_{30}$
k–edges 3-decomposability rectilinear crossing number
2010/12/10
There are two properties shared by all known crossing-minimizing geometric drawings of Kn, for n a multiple of 3.First, the underlying n-point set of these drawings has exactly 3k+2
2(≤ k)...
Optimal Reversible Annuities to Minimize the Probability of Lifetime Ruin
Life annuities retirement optimali nvestment stochastic control free-boundary problem
2010/4/27
We find the minimum probability of lifetime ruin of an investor who can invest in a market with a risky and a riskless asset and who can purchase a reversible life annuity. The surrender charge of a l...
Finding the minimize summation for location of facility in a convex set with fuzzy data
Facilities location Norm Linear Programming
2010/9/15
In this paper we first show a model using L1-Norm for locating a facility in a convex set and then we use it for fuzzy data in linear programming problems and especial case of integer linear programmi...