@article{OJMO_2022__3__A5_0,
     author = {Robert Hildebrand and Matthias K\"oppe and Yuan Zhou},
     title = {Equivariant {Perturbation} in {Gomory} and {Johnson{\textquoteright}s} {Infinite} {Group} {Problem.} {VII.} {Inverse} {Semigroup} {Theory,} {Closures,} {Decomposition} of {Perturbations}},
     journal = {Open Journal of Mathematical Optimization},
     eid = {5},
     pages = {1--44},
     publisher = {Universit\'e de Montpellier},
     volume = {3},
     year = {2022},
     doi = {10.5802/ojmo.16},
     language = {en},
     url = {https://ojmo.centre-mersenne.org/articles/10.5802/ojmo.16/}
}