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For two reasons we shall give the reader a rest: one reason is that the reader deserves a pause to reflect on the Axiom of Choice; the other reason is that we would like to show Robinson’s beautiful construction—relying on AC—of how to make two balls from one by dividing the ball into only five parts.

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How to Make Two Balls from One

  • 章节

  • 发表日期：

    2025年

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  • Lorenz J. Halbeisen

摘要

For two reasons we shall give the reader a rest: one reason is that the reader deserves a pause to reflect on the Axiom of Choice; the other reason is that we would like to show Robinson’s beautiful construction—relying on AC—of how to make two balls from one by dividing the ball into only five parts.