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Generalizations of the classical concept of a convex function have been proposed in various fields. In addition to listing new results in more established areas of generalized convexity theory, this study presents developments in emerging fields and a number of applications.

This work shows the application of up-to-date techniques for measuring efficiency and predictability in financial markets. Trading strategies in commodity futures markets, models for the evolution of interest rates and post-optimality analysis in portfolio management are given.

This book presents the 2020 Digital Platform Economy Index (DPE Index). The DPE Index integrates two separate but related literatures on ecosystems, namely, the digital ecosystem and the entrepreneurial ecosystem. This new framework situates digital entrepreneurship within the broader context of users, platforms, and institutions, such that two biotic entities (users and agents) actuate individual agency, and two abiotic components (digital infrastructure and digital platforms) form the external environment. The DPE Index framework includes 12 pillars that integrate the digital and the...