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| Mirrors > Home > MPE Home > Th. List > Mathboxes > resubeqsub | Structured version Visualization version GIF version | ||
| Description: Equivalence between real subtraction and subtraction. (Contributed by SN, 5-May-2024.) |
| Ref | Expression |
|---|---|
| resubeqsub | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 −ℝ 𝐵) = (𝐴 − 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-resscn 11092 | . . . 4 ⊢ ℝ ⊆ ℂ | |
| 2 | resubeu 42831 | . . . . 5 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → ∃!𝑥 ∈ ℝ (𝐵 + 𝑥) = 𝐴) | |
| 3 | reurex 3347 | . . . . 5 ⊢ (∃!𝑥 ∈ ℝ (𝐵 + 𝑥) = 𝐴 → ∃𝑥 ∈ ℝ (𝐵 + 𝑥) = 𝐴) | |
| 4 | 2, 3 | syl 17 | . . . 4 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → ∃𝑥 ∈ ℝ (𝐵 + 𝑥) = 𝐴) |
| 5 | recn 11125 | . . . . 5 ⊢ (𝐵 ∈ ℝ → 𝐵 ∈ ℂ) | |
| 6 | recn 11125 | . . . . 5 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℂ) | |
| 7 | sn-subeu 42881 | . . . . 5 ⊢ ((𝐵 ∈ ℂ ∧ 𝐴 ∈ ℂ) → ∃!𝑥 ∈ ℂ (𝐵 + 𝑥) = 𝐴) | |
| 8 | 5, 6, 7 | syl2an 597 | . . . 4 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → ∃!𝑥 ∈ ℂ (𝐵 + 𝑥) = 𝐴) |
| 9 | riotass 7352 | . . . 4 ⊢ ((ℝ ⊆ ℂ ∧ ∃𝑥 ∈ ℝ (𝐵 + 𝑥) = 𝐴 ∧ ∃!𝑥 ∈ ℂ (𝐵 + 𝑥) = 𝐴) → (℩𝑥 ∈ ℝ (𝐵 + 𝑥) = 𝐴) = (℩𝑥 ∈ ℂ (𝐵 + 𝑥) = 𝐴)) | |
| 10 | 1, 4, 8, 9 | mp3an2i 1469 | . . 3 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (℩𝑥 ∈ ℝ (𝐵 + 𝑥) = 𝐴) = (℩𝑥 ∈ ℂ (𝐵 + 𝑥) = 𝐴)) |
| 11 | 10 | ancoms 458 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (℩𝑥 ∈ ℝ (𝐵 + 𝑥) = 𝐴) = (℩𝑥 ∈ ℂ (𝐵 + 𝑥) = 𝐴)) |
| 12 | resubval 42821 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 −ℝ 𝐵) = (℩𝑥 ∈ ℝ (𝐵 + 𝑥) = 𝐴)) | |
| 13 | subval 11381 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 − 𝐵) = (℩𝑥 ∈ ℂ (𝐵 + 𝑥) = 𝐴)) | |
| 14 | 6, 5, 13 | syl2an 597 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 − 𝐵) = (℩𝑥 ∈ ℂ (𝐵 + 𝑥) = 𝐴)) |
| 15 | 11, 12, 14 | 3eqtr4d 2782 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 −ℝ 𝐵) = (𝐴 − 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ∃wrex 3062 ∃!wreu 3341 ⊆ wss 3890 ℩crio 7320 (class class class)co 7364 ℂcc 11033 ℝcr 11034 + caddc 11038 − cmin 11374 −ℝ cresub 42819 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5232 ax-nul 5242 ax-pow 5306 ax-pr 5374 ax-un 7686 ax-resscn 11092 ax-1cn 11093 ax-icn 11094 ax-addcl 11095 ax-addrcl 11096 ax-mulcl 11097 ax-mulrcl 11098 ax-addass 11100 ax-mulass 11101 ax-distr 11102 ax-i2m1 11103 ax-1ne0 11104 ax-1rid 11105 ax-rnegex 11106 ax-rrecex 11107 ax-cnre 11108 ax-pre-lttri 11109 ax-pre-lttrn 11110 ax-pre-ltadd 11111 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5523 df-po 5536 df-so 5537 df-xp 5634 df-rel 5635 df-cnv 5636 df-co 5637 df-dm 5638 df-rn 5639 df-res 5640 df-ima 5641 df-iota 6452 df-fun 6498 df-fn 6499 df-f 6500 df-f1 6501 df-fo 6502 df-f1o 6503 df-fv 6504 df-riota 7321 df-ov 7367 df-oprab 7368 df-mpo 7369 df-er 8640 df-en 8891 df-dom 8892 df-sdom 8893 df-pnf 11178 df-mnf 11179 df-ltxr 11181 df-sub 11376 df-2 12241 df-3 12242 df-resub 42820 |
| This theorem is referenced by: subresre 42885 reelznn0nn 42928 |
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