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| Mirrors > Home > ILE Home > Th. List > tposeq | GIF version | ||
| Description: Equality theorem for transposition. (Contributed by Mario Carneiro, 10-Sep-2015.) |
| Ref | Expression |
|---|---|
| tposeq | ⊢ (𝐹 = 𝐺 → tpos 𝐹 = tpos 𝐺) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqimss 3291 | . . 3 ⊢ (𝐹 = 𝐺 → 𝐹 ⊆ 𝐺) | |
| 2 | tposss 6476 | . . 3 ⊢ (𝐹 ⊆ 𝐺 → tpos 𝐹 ⊆ tpos 𝐺) | |
| 3 | 1, 2 | syl 14 | . 2 ⊢ (𝐹 = 𝐺 → tpos 𝐹 ⊆ tpos 𝐺) |
| 4 | eqimss2 3292 | . . 3 ⊢ (𝐹 = 𝐺 → 𝐺 ⊆ 𝐹) | |
| 5 | tposss 6476 | . . 3 ⊢ (𝐺 ⊆ 𝐹 → tpos 𝐺 ⊆ tpos 𝐹) | |
| 6 | 4, 5 | syl 14 | . 2 ⊢ (𝐹 = 𝐺 → tpos 𝐺 ⊆ tpos 𝐹) |
| 7 | 3, 6 | eqssd 3254 | 1 ⊢ (𝐹 = 𝐺 → tpos 𝐹 = tpos 𝐺) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 ⊆ wss 3210 tpos ctpos 6474 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2206 ax-ext 2214 ax-sep 4227 ax-pow 4286 ax-pr 4321 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ral 2525 df-rex 2526 df-v 2814 df-un 3214 df-in 3216 df-ss 3223 df-pw 3670 df-sn 3694 df-pr 3695 df-op 3697 df-br 4109 df-opab 4171 df-mpt 4172 df-xp 4754 df-rel 4755 df-cnv 4756 df-co 4757 df-dm 4758 df-res 4760 df-tpos 6475 |
| This theorem is referenced by: tposeqd 6478 tposeqi 6507 |
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