Proofs for the New Definitions in Financial Markets

Atilla Aras

Papers from arXiv.org

Abstract: Constructing theorems can help to determine the shape of certain utility curves that make up the new definitions in financial markets. The aim of this study was to present proofs for these theorems. Basic thoughts of new alternative definitions emerge from the decision-making under uncertainty in economics and finance. Shape of the certain utility curve is central to standard definitions in determining risk attitudes of investors. Shape alone determines risk behavior of investors in standard theory. Although the terms risk-averse, risk-loving, and risk-neutral are equivalent to strict concavity, strict convexity, and linearity, respectively, in standard theory, strict concavity or strict convexity, or linearity are valid for certain new definitions, not being the same as standard theory. Hence, it can be stated that new alternative definitions are broader than standard definitions from the viewpoint of shape. For instance, the certain utility curve of a risk-averse investor can be strictly concave or strictly convex, or linear in alternative definitions.

Date: 2023-09, Revised 2024-05
New Economics Papers: this item is included in nep-ger and nep-upt
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