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Related theorems GIF version |
| Description: Consequence of the dual modular pair property. |
| Ref | Expression |
|---|---|
| dmdi2 | ⊢ (((A ∈ Cℋ ⋀ B ∈ Cℋ ⋀ C ∈ Cℋ ) ⋀ (A Mℋ* B ⋀ B ⊆ C)) → (C ∩ (A ∨ℋ B)) ⊆ ((C ∩ A) ∨ℋ B)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmdit 10229 | . 2 ⊢ (((A ∈ Cℋ ⋀ B ∈ Cℋ ⋀ C ∈ Cℋ ) ⋀ (A Mℋ* B ⋀ B ⊆ C)) → ((C ∩ A) ∨ℋ B) = (C ∩ (A ∨ℋ B))) | |
| 2 | eqimss2 2110 | . 2 ⊢ (((C ∩ A) ∨ℋ B) = (C ∩ (A ∨ℋ B)) → (C ∩ (A ∨ℋ B)) ⊆ ((C ∩ A) ∨ℋ B)) | |
| 3 | 1, 2 | syl 10 | 1 ⊢ (((A ∈ Cℋ ⋀ B ∈ Cℋ ⋀ C ∈ Cℋ ) ⋀ (A Mℋ* B ⋀ B ⊆ C)) → (C ∩ (A ∨ℋ B)) ⊆ ((C ∩ A) ∨ℋ B)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 3 ⋀ wa 223 ⋀ w3a 775 = wceq 956 ∈ wcel 958 ∩ cin 2046 ⊆ wss 2047 class class class wbr 2619 (class class class)co 3963 Cℋ cch 8798 ∨ℋ chj 8802 Mℋ* cdmd 8836 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-10 966 ax-11 967 ax-12 968 ax-13 969 ax-14 970 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-sep 2703 ax-pow 2742 ax-pr 2779 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3an 777 df-ex 981 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1587 df-ral 1649 df-v 1812 df-dif 2049 df-un 2050 df-in 2051 df-ss 2053 df-nul 2281 df-pw 2402 df-sn 2412 df-pr 2413 df-op 2416 df-uni 2504 df-br 2620 df-opab 2667 df-xp 3184 df-cnv 3186 df-dm 3188 df-rn 3189 df-res 3190 df-ima 3191 df-fv 3198 df-opr 3965 df-dmd 10208 |