Description: Obsolete version of mapex as of 17-Jun-2025. (Contributed by Raph Levien, 4-Dec-2003) (New usage is discouraged.) (Proof modification is discouraged.)
Ref | Expression | ||
---|---|---|---|
Assertion | mapexOLD |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fssxp | ||
2 | 1 | ss2abi | |
3 | df-pw | ||
4 | 2 3 | sseqtrri | |
5 | xpexg | ||
6 | 5 | pwexd | |
7 | ssexg | ||
8 | 4 6 7 | sylancr |