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Related theorems GIF version |
| Description: Transitivity of equinumerosity and strict dominance. |
| Ref | Expression |
|---|---|
| ensdomtr | ⊢ ((A ≈ B ⋀ B ≺ C) → A ≺ C) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | endomtr 4410 | . . . . . . . 8 ⊢ ((A ≈ B ⋀ B ≼ C) → A ≼ C) | |
| 2 | 1 | ex 373 | . . . . . . 7 ⊢ (A ≈ B → (B ≼ C → A ≼ C)) |
| 3 | 2 | adantl 388 | . . . . . 6 ⊢ ((B ∈ V ⋀ A ≈ B) → (B ≼ C → A ≼ C)) |
| 4 | ensymg 4401 | . . . . . . . . 9 ⊢ (B ∈ V → (A ≈ B → B ≈ A)) | |
| 5 | 4 | imp 350 | . . . . . . . 8 ⊢ ((B ∈ V ⋀ A ≈ B) → B ≈ A) |
| 6 | entrt 4404 | . . . . . . . . 9 ⊢ ((B ≈ A ⋀ A ≈ C) → B ≈ C) | |
| 7 | 6 | ex 373 | . . . . . . . 8 ⊢ (B ≈ A → (A ≈ C → B ≈ C)) |
| 8 | 5, 7 | syl 10 | . . . . . . 7 ⊢ ((B ∈ V ⋀ A ≈ B) → (A ≈ C → B ≈ C)) |
| 9 | 8 | con3d 95 | . . . . . 6 ⊢ ((B ∈ V ⋀ A ≈ B) → (¬ B ≈ C → ¬ A ≈ C)) |
| 10 | 3, 9 | anim12d 557 | . . . . 5 ⊢ ((B ∈ V ⋀ A ≈ B) → ((B ≼ C ⋀ ¬ B ≈ C) → (A ≼ C ⋀ ¬ A ≈ C))) |
| 11 | brsdom 4372 | . . . . 5 ⊢ (B ≺ C ↔ (B ≼ C ⋀ ¬ B ≈ C)) | |
| 12 | brsdom 4372 | . . . . 5 ⊢ (A ≺ C ↔ (A ≼ C ⋀ ¬ A ≈ C)) | |
| 13 | 10, 11, 12 | 3imtr4g 552 | . . . 4 ⊢ ((B ∈ V ⋀ A ≈ B) → (B ≺ C → A ≺ C)) |
| 14 | 13 | ex 373 | . . 3 ⊢ (B ∈ V → (A ≈ B → (B ≺ C → A ≺ C))) |
| 15 | 14 | imp3a 361 | . 2 ⊢ (B ∈ V → ((A ≈ B ⋀ B ≺ C) → A ≺ C)) |
| 16 | relsdom 4365 | . . . . . 6 ⊢ Rel ≺ | |
| 17 | 16 | brrelexi 3204 | . . . . 5 ⊢ (B ≺ C → B ∈ V) |
| 18 | 17 | con3i 98 | . . . 4 ⊢ (¬ B ∈ V → ¬ B ≺ C) |
| 19 | 18 | pm2.21d 78 | . . 3 ⊢ (¬ B ∈ V → (B ≺ C → A ≺ C)) |
| 20 | 19 | adantld 390 | . 2 ⊢ (¬ B ∈ V → ((A ≈ B ⋀ B ≺ C) → A ≺ C)) |
| 21 | 15, 20 | pm2.61i 126 | 1 ⊢ ((A ≈ B ⋀ B ≺ C) → A ≺ C) |
| Colors of variables: wff set class |
| Syntax hints: ¬ wn 2 → wi 3 ⋀ wa 223 ∈ wcel 957 Vcvv 1808 class class class wbr 2615 ≈ cen 4357 ≼ cdom 4358 ≺ csdm 4359 |
| This theorem is referenced by: sdomen1 4470 isfinite2 4532 pm54.43 4555 alephordi 4857 resdomq 7510 aleph1re 7511 infdif 7528 infpss 7534 aleph1irr 7538 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 961 ax-gen 962 ax-8 963 ax-9 964 ax-10 965 ax-11 966 ax-12 967 ax-13 968 ax-14 969 ax-17 970 ax-4 972 ax-5o 974 ax-6o 977 ax-9o 1122 ax-10o 1139 ax-16 1209 ax-11o 1217 ax-ext 1458 ax-rep 2689 ax-sep 2699 ax-pow 2738 ax-pr 2775 ax-un 2862 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3an 776 df-ex 980 df-sb 1171 df-eu 1381 df-mo 1382 df-clab 1463 df-cleq 1468 df-clel 1471 df-ne 1585 df-rex 1648 df-v 1809 df-dif 2046 df-un 2047 df-in 2048 df-ss 2050 df-nul 2278 df-pw 2399 df-sn 2409 df-pr 2410 df-op 2413 df-uni 2500 df-br 2616 df-opab 2663 df-id 2831 df-xp 3180 df-rel 3181 df-cnv 3182 df-co 3183 df-dm 3184 df-rn 3185 df-res 3186 df-ima 3187 df-fun 3188 df-fn 3189 df-f 3190 df-f1 3191 df-fo 3192 df-f1o 3193 df-er 4254 df-en 4360 df-dom 4361 df-sdom 4362 |