Bekker numbering

It is based on the page numbers used in the Prussian Academy of Sciences edition of the complete works of Aristotle (1831–1837) and takes its name from the editor of that edition, the classical philologist August Immanuel Bekker (1785–1871); because the academy was located in Berlin, Germany, the system is occasionally referred to by the alternative name Berlin numbering or Berlin pagination.

While Bekker numbers are the dominant method used to refer to the works of Aristotle, Catholic or Thomist scholars often use the medieval method of reference by book, chapter, and sentence, albeit generally in addition to Bekker numbers.

The numeration of the fragments in a revised edition by Rose, published in the Teubner series, Aristotelis qui ferebantur librorum fragmenta, Leipzig, 1886, is still commonly used (indicated by R3), although there is a more current edition with a different numeration by Olof Gigon (published in 1987 as a new vol.

Ross, Select Fragments (Oxford 1952), and Jonathan Barnes (ed.

The possibly spurious work, On Ideas survives in quotations by Alexander of Aphrodisias in his commentary on Aristotle's Metaphysics.

For the dialogues, see also the editions of Richard Rudolf Walzer, Aristotelis Dialogorum fragmenta, in usum scholarum (Florence 1934), and Renato Laurenti, Aristotele: I frammenti dei dialoghi (2 vols.