@article{oai:ynu.repo.nii.ac.jp:00002034,
 author = {Ui, Takashi},
 issue = {1},
 journal = {International game theory review},
 month = {Mar},
 note = {application/pdf, postprint, This paper proposes a discrete analogue of concavity appropriate for potential games with discrete strategy sets. It guarantees that every Nash equilibrium maximizes a potential function.},
 pages = {137--143},
 title = {Discrete concavity for potential games},
 volume = {10},
 year = {2008}
}