- See also
- External links
In philosophy, specifically metaphysics, mereology is the study of parthood relationships. In mathematics and formal logic, wellfoundedness prohibits 
for any x.
Thus non-wellfounded mereology treats topologically circular, cyclical, repetitive, or other eventual self-containment.
More formally, non-wellfounded partial orders may exhibit for some x whereas well-founded orders prohibit that.
See also
- Aczel's anti-foundation axiom
- Peter Aczel
- John Barwise
- Steve Awodey
- Dana Scott
External links
- {{SEP|nonwellfounded-set-theory|Non-wellfounded Set Theory|Lawrence S. Moss|2017-01-05}}
2 : Mereology|Mathematical logic
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