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| Mirrors > Home > MPE Home > Th. List > tgtop11 | Structured version Visualization version GIF version | ||
| Description: The topology generation function is one-to-one when applied to completed topologies. (Contributed by NM, 18-Jul-2006.) |
| Ref | Expression |
|---|---|
| tgtop11 | ⊢ ((𝐽 ∈ Top ∧ 𝐾 ∈ Top ∧ (topGen‘𝐽) = (topGen‘𝐾)) → 𝐽 = 𝐾) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tgtop 23034 | . . 3 ⊢ (𝐽 ∈ Top → (topGen‘𝐽) = 𝐽) | |
| 2 | tgtop 23034 | . . 3 ⊢ (𝐾 ∈ Top → (topGen‘𝐾) = 𝐾) | |
| 3 | 1, 2 | eqeqan12d 2777 | . 2 ⊢ ((𝐽 ∈ Top ∧ 𝐾 ∈ Top) → ((topGen‘𝐽) = (topGen‘𝐾) ↔ 𝐽 = 𝐾)) |
| 4 | 3 | biimp3a 1491 | 1 ⊢ ((𝐽 ∈ Top ∧ 𝐾 ∈ Top ∧ (topGen‘𝐽) = (topGen‘𝐾)) → 𝐽 = 𝐾) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1099 = wceq 1561 ∈ wcel 2143 ‘cfv 6522 topGenctg 17467 Topctop 22954 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5247 ax-nul 5257 ax-pow 5323 ax-pr 5391 ax-un 7719 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3078 df-rex 3088 df-rab 3416 df-v 3457 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5102 df-opab 5164 df-mpt 5183 df-id 5543 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-iota 6478 df-fun 6524 df-fv 6530 df-topgen 17473 df-top 22955 |
| This theorem is referenced by: (None) |
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