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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 563 | . . 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 589 an4s 592 anandi 594 anandir 595 rnlem 985 an6 1358 2eu4 2174 reean 2712 reu2 3005 rmo4 3010 rmo3f 3014 rmo3 3135 inxp 4889 xp11m 5201 fununi 5424 fun 5536 resoprab2 6150 xporderlem 6427 poxp 6428 th3qlem1 6871 enq0enq 7746 enq0tr 7749 genpdisj 7838 cju 9235 elfzo2 10484 iooinsup 11962 summodc 12069 prodmodc 12264 issubmd 13687 dvdsrtr 14246 domnmuln0 14419 txbasval 15132 txcnp 15136 txlm 15144 |
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