3 ms·
If an item belongs to multiple equivalence classes, then transitivity does not hold. In other words, if you show that the classes are not disjoint, then it's no
by jganetsk 17y ago
If an item belongs to multiple equivalence classes, then transitivity does not hold. In other words, if you show that the classes are not disjoint, then it's not an equivalence relation.
18x belongs in the 8x class, but 28x belongs in both the 28x and 8x classes.
- jibiki 17y agoAnd 8x belongs in 28x's class, since 8x and 28x share a tail. I think the author meant for you to interpret "equal after a finite number of entries" in the more normal fashion (e.g., 123x = 456x but 1x != 111x, the prefixes have to have equal length.) But your way seems to work fine too.