Mathematics without Numbers —— Towards a Modal-Structural Interpretation

----- 没有数字的数学：走向模态 - 结构解释

ISBN: 9780198240341 出版年：2003 页码：167 Hellman, Geoffrey Clarendon Press

Geoffrey Hellman presents a detailed interpretation of mathematics as the investigation of structural possibilities, as opposed to absolute, Platonic objects. After dealing with the natural numbers and analysis, he extends his approach to set theory, and shows how to dispense with a fixed universe of sets. Finally, he addresses problems of application to the physical world.