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Mirrors > Home > ILE Home > Th. List > 8p4e12 | GIF version |
Description: 8 + 4 = 12. (Contributed by Mario Carneiro, 19-Apr-2015.) |
Ref | Expression |
---|---|
8p4e12 | ⊢ (8 + 4) = ;12 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 8nn0 9024 | . 2 ⊢ 8 ∈ ℕ0 | |
2 | 3nn0 9019 | . 2 ⊢ 3 ∈ ℕ0 | |
3 | 1nn0 9017 | . 2 ⊢ 1 ∈ ℕ0 | |
4 | df-4 8805 | . 2 ⊢ 4 = (3 + 1) | |
5 | df-2 8803 | . 2 ⊢ 2 = (1 + 1) | |
6 | 8p3e11 9286 | . 2 ⊢ (8 + 3) = ;11 | |
7 | 1, 2, 3, 4, 5, 6 | 6p5lem 9275 | 1 ⊢ (8 + 4) = ;12 |
Colors of variables: wff set class |
Syntax hints: = wceq 1332 (class class class)co 5782 1c1 7645 + caddc 7647 2c2 8795 3c3 8796 4c4 8797 8c8 8801 ;cdc 9206 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-14 1493 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 ax-sep 4054 ax-pow 4106 ax-pr 4139 ax-setind 4460 ax-cnex 7735 ax-resscn 7736 ax-1cn 7737 ax-1re 7738 ax-icn 7739 ax-addcl 7740 ax-addrcl 7741 ax-mulcl 7742 ax-addcom 7744 ax-mulcom 7745 ax-addass 7746 ax-mulass 7747 ax-distr 7748 ax-i2m1 7749 ax-1rid 7751 ax-0id 7752 ax-rnegex 7753 ax-cnre 7755 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-fal 1338 df-nf 1438 df-sb 1737 df-eu 2003 df-mo 2004 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-ne 2310 df-ral 2422 df-rex 2423 df-reu 2424 df-rab 2426 df-v 2691 df-sbc 2914 df-dif 3078 df-un 3080 df-in 3082 df-ss 3089 df-pw 3517 df-sn 3538 df-pr 3539 df-op 3541 df-uni 3745 df-int 3780 df-br 3938 df-opab 3998 df-id 4223 df-xp 4553 df-rel 4554 df-cnv 4555 df-co 4556 df-dm 4557 df-iota 5096 df-fun 5133 df-fv 5139 df-riota 5738 df-ov 5785 df-oprab 5786 df-mpo 5787 df-sub 7959 df-inn 8745 df-2 8803 df-3 8804 df-4 8805 df-5 8806 df-6 8807 df-7 8808 df-8 8809 df-9 8810 df-n0 9002 df-dec 9207 |
This theorem is referenced by: 8p5e13 9288 4t3e12 9303 8t4e32 9322 |
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