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Mirrors > Home > MPE Home > Th. List > 3eltr3g | Structured version Visualization version Unicode version |
Description: Substitution of equal classes into membership relation. (Contributed by Mario Carneiro, 6-Jan-2017.) (Proof shortened by Wolf Lammen, 23-Nov-2019.) |
Ref | Expression |
---|---|
3eltr3g.1 | |
3eltr3g.2 | |
3eltr3g.3 |
Ref | Expression |
---|---|
3eltr3g |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3eltr3g.2 | . . 3 | |
2 | 3eltr3g.1 | . . 3 | |
3 | 1, 2 | syl5eqelr 2706 | . 2 |
4 | 3eltr3g.3 | . 2 | |
5 | 3, 4 | syl6eleq 2711 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wceq 1483 wcel 1990 |
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-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-an 386 df-ex 1705 df-cleq 2615 df-clel 2618 |
This theorem is referenced by: rankelpr 8736 isf34lem7 9201 rmulccn 29974 xrge0mulc1cn 29987 esumpfinvallem 30136 fourierdlem62 40385 |
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