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| Mirrors > Home > MPE Home > Th. List > naddcl | Structured version Visualization version GIF version | ||
| Description: Closure law for natural addition. (Contributed by Scott Fenton, 26-Aug-2024.) |
| Ref | Expression |
|---|---|
| naddcl | ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 +no 𝐵) ∈ On) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | naddcllem 8658 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ((𝐴 +no 𝐵) ∈ On ∧ (𝐴 +no 𝐵) = ∩ {𝑥 ∈ On ∣ (( +no “ ({𝐴} × 𝐵)) ⊆ 𝑥 ∧ ( +no “ (𝐴 × {𝐵})) ⊆ 𝑥)})) | |
| 2 | 1 | simpld 499 | 1 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 +no 𝐵) ∈ On) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1570 ∈ wcel 2143 {crab 3416 ⊆ wss 3905 {csn 4589 ∩ cint 4912 × cxp 5659 “ cima 5664 Oncon0 6360 (class class class)co 7410 +no cnadd 8647 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5238 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-int 4913 df-iun 4958 df-br 5110 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5556 df-eprel 5561 df-po 5569 df-so 5570 df-fr 5614 df-se 5615 df-we 5616 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-pred 6302 df-ord 6363 df-on 6364 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-ov 7413 df-oprab 7414 df-mpo 7415 df-1st 7982 df-2nd 7983 df-frecs 8274 df-nadd 8648 |
| This theorem is referenced by: naddcld 8662 naddf 8664 naddel1 8670 naddss1 8672 naddasslem1 8677 naddasslem2 8678 nadd4 8681 naddel12 8683 naddsuc2 8684 addsproplem2 28163 addsprop 28169 addbdaylem 28210 addbday 28211 mulsproplem5 28313 mulsproplem6 28314 mulsproplem7 28315 mulsproplem8 28316 mulsprop 28323 addonbday 28472 ltnadd 36695 naddle 36696 naddass1 44120 naddgeoa 44121 naddwordnexlem4 44128 |
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