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Mirrors > Home > MPE Home > Th. List > nnaword1 | Structured version Visualization version GIF version |
Description: Weak ordering property of addition. (Contributed by NM, 9-Nov-2002.) (Revised by Mario Carneiro, 15-Nov-2014.) |
Ref | Expression |
---|---|
nnaword1 | ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω) → 𝐴 ⊆ (𝐴 +o 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nna0 8599 | . . 3 ⊢ (𝐴 ∈ ω → (𝐴 +o ∅) = 𝐴) | |
2 | 1 | adantr 480 | . 2 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω) → (𝐴 +o ∅) = 𝐴) |
3 | 0ss 4388 | . . 3 ⊢ ∅ ⊆ 𝐵 | |
4 | peano1 7872 | . . . 4 ⊢ ∅ ∈ ω | |
5 | nnaword 8622 | . . . . 5 ⊢ ((∅ ∈ ω ∧ 𝐵 ∈ ω ∧ 𝐴 ∈ ω) → (∅ ⊆ 𝐵 ↔ (𝐴 +o ∅) ⊆ (𝐴 +o 𝐵))) | |
6 | 5 | 3com13 1121 | . . . 4 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω ∧ ∅ ∈ ω) → (∅ ⊆ 𝐵 ↔ (𝐴 +o ∅) ⊆ (𝐴 +o 𝐵))) |
7 | 4, 6 | mp3an3 1446 | . . 3 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω) → (∅ ⊆ 𝐵 ↔ (𝐴 +o ∅) ⊆ (𝐴 +o 𝐵))) |
8 | 3, 7 | mpbii 232 | . 2 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω) → (𝐴 +o ∅) ⊆ (𝐴 +o 𝐵)) |
9 | 2, 8 | eqsstrrd 4013 | 1 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω) → 𝐴 ⊆ (𝐴 +o 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1533 ∈ wcel 2098 ⊆ wss 3940 ∅c0 4314 (class class class)co 7401 ωcom 7848 +o coa 8458 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2695 ax-sep 5289 ax-nul 5296 ax-pr 5417 ax-un 7718 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2526 df-eu 2555 df-clab 2702 df-cleq 2716 df-clel 2802 df-nfc 2877 df-ne 2933 df-ral 3054 df-rex 3063 df-reu 3369 df-rab 3425 df-v 3468 df-sbc 3770 df-csb 3886 df-dif 3943 df-un 3945 df-in 3947 df-ss 3957 df-pss 3959 df-nul 4315 df-if 4521 df-pw 4596 df-sn 4621 df-pr 4623 df-op 4627 df-uni 4900 df-iun 4989 df-br 5139 df-opab 5201 df-mpt 5222 df-tr 5256 df-id 5564 df-eprel 5570 df-po 5578 df-so 5579 df-fr 5621 df-we 5623 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6290 df-ord 6357 df-on 6358 df-lim 6359 df-suc 6360 df-iota 6485 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-ov 7404 df-oprab 7405 df-mpo 7406 df-om 7849 df-2nd 7969 df-frecs 8261 df-wrecs 8292 df-recs 8366 df-rdg 8405 df-oadd 8465 |
This theorem is referenced by: nnaword2 8625 nnmordi 8626 nnawordex 8632 omopthlem2 8654 eldifsucnn 8658 unfilem1 9305 unfiOLD 9308 ttrcltr 9706 ackbij1lem12 10221 |
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