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| Mirrors > Home > MPE Home > Th. List > nnm1 | Structured version Visualization version GIF version | ||
| Description: Multiply an element of ω by 1o. (Contributed by Mario Carneiro, 17-Nov-2014.) |
| Ref | Expression |
|---|---|
| nnm1 | ⊢ (𝐴 ∈ ω → (𝐴 ·o 1o) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-1o 8452 | . . 3 ⊢ 1o = suc ∅ | |
| 2 | 1 | oveq2i 7422 | . 2 ⊢ (𝐴 ·o 1o) = (𝐴 ·o suc ∅) |
| 3 | peano1 7884 | . . . 4 ⊢ ∅ ∈ ω | |
| 4 | nnmsuc 8592 | . . . 4 ⊢ ((𝐴 ∈ ω ∧ ∅ ∈ ω) → (𝐴 ·o suc ∅) = ((𝐴 ·o ∅) +o 𝐴)) | |
| 5 | 3, 4 | mpan2 703 | . . 3 ⊢ (𝐴 ∈ ω → (𝐴 ·o suc ∅) = ((𝐴 ·o ∅) +o 𝐴)) |
| 6 | nnm0 8590 | . . . 4 ⊢ (𝐴 ∈ ω → (𝐴 ·o ∅) = ∅) | |
| 7 | 6 | oveq1d 7426 | . . 3 ⊢ (𝐴 ∈ ω → ((𝐴 ·o ∅) +o 𝐴) = (∅ +o 𝐴)) |
| 8 | nna0r 8594 | . . 3 ⊢ (𝐴 ∈ ω → (∅ +o 𝐴) = 𝐴) | |
| 9 | 5, 7, 8 | 3eqtrd 2808 | . 2 ⊢ (𝐴 ∈ ω → (𝐴 ·o suc ∅) = 𝐴) |
| 10 | 2, 9 | eqtrid 2816 | 1 ⊢ (𝐴 ∈ ω → (𝐴 ·o 1o) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1567 ∈ wcel 2149 ∅c0 4294 suc csuc 6363 (class class class)co 7411 ωcom 7861 1oc1o 8445 +o coa 8449 ·o comu 8450 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5271 ax-pr 5405 ax-un 7733 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-tr 5223 df-id 5557 df-eprel 5562 df-po 5570 df-so 5571 df-fr 5615 df-we 5617 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7862 df-2nd 7986 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-rdg 8396 df-1o 8452 df-oadd 8456 df-omul 8457 |
| This theorem is referenced by: nnm2 8638 mulidpi 10870 |
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