AMIR, Rabah; GRILO, Isabel - Center for Operations Research and Econometrics (CORE), … - 2001
For Bertrand duopoly with linear costs, we establish via a single counterexample that: (i) A new monotone transformation of the firms' profit functions may lead to the supermodularity of transformed profits when the standard log and identity transformations both fail, and (ii) Topkis's notion of...