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| Mirrors > Home > MPE Home > Th. List > Mathboxes > sn-00id | Structured version Visualization version GIF version | ||
| Description: 00id 11524 proven without ax-mulcom 11303 but using ax-1ne0 11308. (Though note that the current version of 00id 11524 can be changed to avoid ax-icn 11298, ax-addcl 11299, ax-mulcl 11301, ax-i2m1 11307, ax-cnre 11312. Most of this is by using 0cnALT3 43570 instead of 0cn 11337). (Contributed by SN, 25-Dec-2023.) (Proof modification is discouraged.) |
| Ref | Expression |
|---|---|
| sn-00id | ⊢ (0 + 0) = 0 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0re 11349 | . . . . 5 ⊢ 0 ∈ ℝ | |
| 2 | resubadd 43696 | . . . . 5 ⊢ ((0 ∈ ℝ ∧ 0 ∈ ℝ ∧ 0 ∈ ℝ) → ((0 −ℝ 0) = 0 ↔ (0 + 0) = 0)) | |
| 3 | 1, 1, 1, 2 | mp3an 1491 | . . . 4 ⊢ ((0 −ℝ 0) = 0 ↔ (0 + 0) = 0) |
| 4 | 3 | necon3abii 3005 | . . 3 ⊢ ((0 −ℝ 0) ≠ 0 ↔ ¬ (0 + 0) = 0) |
| 5 | sn-00idlem2 43716 | . . . 4 ⊢ ((0 −ℝ 0) ≠ 0 → (0 −ℝ 0) = 1) | |
| 6 | sn-00idlem3 43717 | . . . 4 ⊢ ((0 −ℝ 0) = 1 → (0 + 0) = 0) | |
| 7 | 5, 6 | syl 18 | . . 3 ⊢ ((0 −ℝ 0) ≠ 0 → (0 + 0) = 0) |
| 8 | 4, 7 | sylbir 238 | . 2 ⊢ (¬ (0 + 0) = 0 → (0 + 0) = 0) |
| 9 | 8 | pm2.18i 130 | 1 ⊢ (0 + 0) = 0 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 ↔ wb 209 = wceq 1570 ∈ wcel 2147 ≠ wne 2959 (class class class)co 7451 ℝcr 11238 0cc0 11239 1c1 11240 + caddc 11242 −ℝ cresub 43682 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-br 5109 df-opab 5174 df-mpt 5193 df-id 5553 df-po 5566 df-so 5567 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-er 8755 df-en 9012 df-dom 9013 df-sdom 9014 df-pnf 11384 df-mnf 11385 df-ltxr 11387 df-resub 43683 |
| This theorem is used by: re0m0e0 43719 sn-addrid 43738 sn-mul01 43743 sn-mul02 43782 |
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