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| Mirrors > Home > ILE Home > Th. List > an4 | GIF version | ||
| Description: Rearrangement of 4 conjuncts. (Contributed by NM, 10-Jul-1994.) |
| Ref | Expression |
|---|---|
| an4 | ⊢ (((𝜑 ∧ 𝜓) ∧ (𝜒 ∧ 𝜃)) ↔ ((𝜑 ∧ 𝜒) ∧ (𝜓 ∧ 𝜃))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | an12 561 | . . 3 ⊢ ((𝜓 ∧ (𝜒 ∧ 𝜃)) ↔ (𝜒 ∧ (𝜓 ∧ 𝜃))) | |
| 2 | 1 | anbi2i 457 | . 2 ⊢ ((𝜑 ∧ (𝜓 ∧ (𝜒 ∧ 𝜃))) ↔ (𝜑 ∧ (𝜒 ∧ (𝜓 ∧ 𝜃)))) |
| 3 | anass 401 | . 2 ⊢ (((𝜑 ∧ 𝜓) ∧ (𝜒 ∧ 𝜃)) ↔ (𝜑 ∧ (𝜓 ∧ (𝜒 ∧ 𝜃)))) | |
| 4 | anass 401 | . 2 ⊢ (((𝜑 ∧ 𝜒) ∧ (𝜓 ∧ 𝜃)) ↔ (𝜑 ∧ (𝜒 ∧ (𝜓 ∧ 𝜃)))) | |
| 5 | 2, 3, 4 | 3bitr4i 212 | 1 ⊢ (((𝜑 ∧ 𝜓) ∧ (𝜒 ∧ 𝜃)) ↔ ((𝜑 ∧ 𝜒) ∧ (𝜓 ∧ 𝜃))) |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 104 ↔ wb 105 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: an42 587 an4s 590 anandi 592 anandir 593 rnlem 982 an6 1355 2eu4 2171 reean 2700 reu2 2992 rmo4 2997 rmo3f 3001 rmo3 3122 inxp 4862 xp11m 5173 fununi 5395 fun 5505 resoprab2 6113 xporderlem 6391 poxp 6392 th3qlem1 6801 enq0enq 7641 enq0tr 7644 genpdisj 7733 cju 9131 elfzo2 10375 iooinsup 11828 summodc 11934 prodmodc 12129 issubmd 13547 dvdsrtr 14105 domnmuln0 14277 txbasval 14981 txcnp 14985 txlm 14993 |
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