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Mirrors > Home > MPE Home > Th. List > equeuclr | Structured version Visualization version GIF version |
Description: Commuted version of equeucl 1938 (equality is left-Euclidean). (Contributed by BJ, 12-Apr-2021.) |
Ref | Expression |
---|---|
equeuclr | ⊢ (𝑥 = 𝑧 → (𝑦 = 𝑧 → 𝑦 = 𝑥)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | equtrr 1936 | . 2 ⊢ (𝑧 = 𝑥 → (𝑦 = 𝑧 → 𝑦 = 𝑥)) | |
2 | 1 | equcoms 1934 | 1 ⊢ (𝑥 = 𝑧 → (𝑦 = 𝑧 → 𝑦 = 𝑥)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 |
This theorem depends on definitions: df-bi 196 df-an 385 df-ex 1696 |
This theorem is referenced by: equeucl 1938 equequ2 1940 ax13b 1951 aevlem0 1967 equvini 2334 sbequi 2363 |
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