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All questions asked by Mattias Johnson

List all solved & unsolved questions asked by Mattias Johnson

If $xi_mu$ is a Killing vector is it true that its contravariant representation $xi^mu$ also is a Killing vector?

2   Physics Asked on 06/13/2021

differential geometry  general relativity  symmetry  vector fields 

Nonlinear integer (0/1) programming solver

6   Operations Research Asked on 03/01/2021

integer programming  linearization  nonlinear programming  quadratic programming 

How can I find the shortest path for all nodes in a graph from a source $s$?

1   Operations Research Asked on 03/01/2021

linear programming  network flow  optimization 

Free solver for MINP problems

1   Operations Research Asked on 02/18/2021

mixed integer programming  nonlinear programming  solver 

Where I can study some job shop scheduling by course (video )?

0   Operations Research Asked on 02/18/2021

linear programming  modeling  optimization  scheduling 

Linear objective function with power term in constraint

1   Operations Research Asked on 02/15/2021

optimization  quadratic programming 

Formulating these logical constraint in an ILP

1   Operations Research Asked on 01/18/2021

linear programming  linearization  logical constraints  mixed integer programming 

Modeling the multiplication of two binary decision variables in undirected graph in python

0   Operations Research Asked on 01/18/2021

mixed integer programming  modeling  python 

Flexible Job Shop with Preemption

0   Operations Research Asked on 01/15/2021

integer programming  optimization  scheduling  simulated annealing  solver 

How to handle an equality constraint in metaheuristic algorithms (like GA, PSO)?

3   Operations Research Asked on 01/11/2021

constraint  metaheuristics  optimization 

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