An Annotated Translation of Lambert’s Vorläufige Kenntnisse (1766/1770)
摘要
As far as I know, it has not yet been elucidated whether the ratio of the diameter to the circumference can be expressed by means of a rational fraction. [...] Since the matter therefore remains to be elucidated, there may still be people who waste their time searching for such rational fractions or who bring them up as a consequence of erroneous conclusions.