出典:Wikipedia
出典:『Wikipedia』 (2011/08/05 22:57 UTC 版)
In set theory, a universal set is a set which contains all objects, including itself. In set theory as usually formulated, the conception of a set of all sets leads to a paradox. The reason for this lies with Zermelo's axiom of comprehension: for any formula
and set A, the set
| ・universal set | |
| ・Stone lantern | |
| ・foo dog | |
| ・WPET | |
| ・scaped | |
| ・Zev | |
| ・Ringwraith | |
| ・Hue | |
| ・witchweed | |
| ・demography |