Definition talk:Proper Divisor

Outstanding question

"Surely, that is if $x = 1_D$ or $x = y$? In current writing, one could read that $x$ needn't be part of $y$."

Please explain what you mean - I don't understand what you're getting at. --prime mover (talk) 11:12, 10 March 2013 (UTC)

It needs to be explained which of the three conditions for proper divisors are to be dropped to speak of an aliquant part. Second sentence is the remark that presently, it could be all three. — Lord_Farin (talk) 09:16, 11 March 2013 (UTC)

OK I understand, I'll see if I can find my Borowski & Borwein, but I fear it may not be near the top of the stack ... --prime mover (talk) 09:24, 11 March 2013 (UTC)