Research Articles -- Some various convergence results for multivalued martingales -- A note on Aumann's core equivalence theorem without monotonicity -- On two classical turnpike results for the Robinson-Solow-Srinivasan model -- A certain limit of iterated conditional tail expectation -- Set-valued optimization in welfare economics -- Convexity of the lower partition range of a concave vector measure -- Good locally maximal programs for the Robinson-Solow-Srinivasan model -- Historical Perspective -- Pythagorean mathematical idealism and the framing of economic and political theory.

Advances in Mathematical Economics is a publication of the Research Center for Mathematical Economics, which was founded in 1997 as an international scientific association that aims to promote research activities in mathematical economics. Our publication was launched to realize our long-term goal of bringing together those mathematicians who are seriously interested in obtaining new challenging stimuli from economic theories and those economists who are seeking effective mathematical tools for their research. The scope of Advances in Mathematical Economics includes, but is not limited to, the following fields: - economic theories in various fields based on rigorous mathematical reasoning; - mathematical methods (e.g., analysis, algebra, geometry, probability) motivated by economic theories; - mathematical results of potential relevance to economic theory; - historical study of mathematical economics. Authors are asked to develop their original results as fully as possible and also to give a clear-cut expository overview of the problem under discussion. Consequently, we will also invite articles which might be considered too long for publication in journals.