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Mirrors > Home > MPE Home > Th. List > equequ2OLD | Structured version Visualization version Unicode version |
Description: Obsolete proof of equequ2 1953 as of 12-Apr-2021. (Contributed by NM, 21-Jun-1993.) (Proof shortened by Wolf Lammen, 4-Aug-2017.) (Proof modification is discouraged.) (New usage is discouraged.) |
Ref | Expression |
---|---|
equequ2OLD |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | equequ1 1952 | . 2 | |
2 | equcom 1945 | . 2 | |
3 | equcom 1945 | . 2 | |
4 | 1, 2, 3 | 3bitr3g 302 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 |
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 |
This theorem depends on definitions: df-bi 197 df-an 386 df-ex 1705 |
This theorem is referenced by: (None) |
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