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Parallel machine scheduling with step deteriorating jobs and setup times by a hybrid discrete cuckoo search algorithm
Peng Guo, Wenming Cheng, Yi Wang
This article considers the parallel machine scheduling problem with step-deteriorating jobs and sequence-dependent setup times. The objective is to minimize the total tardiness by…
Isoperimetric inequality, -curvature and weights
Yi Wang
A well known question in differential geometry is to control the constant in isoperimetric inequality by intrinsic curvature conditions. In dimension 2, the constant can be control…
MathGR: a tensor and GR computation package to keep it simple
Yi Wang
We introduce the MathGR package, written in Mathematica. The package can manipulate tensor and GR calculations with either abstract or explicit indices, simplify tensors with permu…
The least eigenvalue of graphs whose complements are unicyclic
Yi Wang, Yi-Zheng Fan, Xiao-Xin Li +1
A graph in a certain graph class is called minimizing if the least eigenvalue of the adjacency matrix of the graph attains the minimum among all graphs in that class. Bell {\it et…
A general variable neighborhood search for single-machine total tardiness scheduling problem with step-deteriorating jobs
Peng Guo, Wenming Chen, Yi Wang
In this article, we study a single-machine scheduling problem of minimizing the total tardiness for a set of independent jobs. The processing time of a job is modeled as a step fun…