DOI: 10.68381/jca29028 ISSN: 0944-6532
On the Equality of Clarke and Greenberg-Pierskalla Differentials
Simone Cerreia-Vioglio, Fabio Maccheroni, Massimo Marinacci, Luigi MontrucchioWe study the relations for quasiconcave and continuous functions between the two important notions of Clarke and Greenberg-Pierskalla differentiability. As an application, we generalize the classic Roy's identity of consumer theory.