@article{Tegtmeier_2003, title={Diversity}, url={https://apcz.umk.pl/LLP/article/view/LLP.1995.010}, DOI={10.12775/LLP.1995.010}, abstractNote={Diversity, more often called numerical difference, is all-embracing and ubiquitous. Any entity (existent) of whatever category is diverse from any entity else. Diversity is also ontologically primary. All determinations depend upon it. Therefore, it is mistaken to define diversity as qualitative difference. Such a defintion is circular since qualitative difference is nothing but diversity of properties. This may be called into question by someone who conceives of qualitative difference in terms of negation.}, number={3}, journal={Logic and Logical Philosophy}, author={Tegtmeier, Erwin}, year={2003}, month={Jan.}, pages={175–183} }