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Mirrors > Home > MPE Home > Th. List > spimeh | Structured version Visualization version Unicode version |
Description: Existential introduction, using implicit substitution. Compare Lemma 14 of [Tarski] p. 70. (Contributed by NM, 7-Aug-1994.) (Proof shortened by Wolf Lammen, 10-Dec-2017.) |
Ref | Expression |
---|---|
spimeh.1 | |
spimeh.2 |
Ref | Expression |
---|---|
spimeh |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | spimeh.1 | . 2 | |
2 | ax6ev 1890 | . . . 4 | |
3 | spimeh.2 | . . . 4 | |
4 | 2, 3 | eximii 1764 | . . 3 |
5 | 4 | 19.35i 1806 | . 2 |
6 | 1, 5 | syl 17 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wal 1481 wex 1704 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-6 1888 |
This theorem depends on definitions: df-bi 197 df-ex 1705 |
This theorem is referenced by: bj-spimevw 32657 bj-cbvexiw 32659 |
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