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| Mirrors > Home > MPE Home > Th. List > Mathboxes > subresre | Structured version Visualization version GIF version | ||
| Description: Subtraction restricted to the reals. (Contributed by SN, 5-May-2024.) |
| Ref | Expression |
|---|---|
| subresre | ⊢ −ℝ = ( − ↾ (ℝ × ℝ)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | resubeqsub 43269 | . . . 4 ⊢ ((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝑥 −ℝ 𝑦) = (𝑥 − 𝑦)) | |
| 2 | 1 | 3adant1 1148 | . . 3 ⊢ ((⊤ ∧ 𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝑥 −ℝ 𝑦) = (𝑥 − 𝑦)) |
| 3 | ax-resscn 11177 | . . . 4 ⊢ ℝ ⊆ ℂ | |
| 4 | 3 | a1i 11 | . . 3 ⊢ (⊤ → ℝ ⊆ ℂ) |
| 5 | resubf 43220 | . . . 4 ⊢ −ℝ :(ℝ × ℝ)⟶ℝ | |
| 6 | 5 | a1i 11 | . . 3 ⊢ (⊤ → −ℝ :(ℝ × ℝ)⟶ℝ) |
| 7 | sn-subf 43268 | . . . 4 ⊢ − :(ℂ × ℂ)⟶ℂ | |
| 8 | 7 | a1i 11 | . . 3 ⊢ (⊤ → − :(ℂ × ℂ)⟶ℂ) |
| 9 | 2, 4, 6, 8 | oprres 7588 | . 2 ⊢ (⊤ → −ℝ = ( − ↾ (ℝ × ℝ))) |
| 10 | 9 | mptru 1577 | 1 ⊢ −ℝ = ( − ↾ (ℝ × ℝ)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ⊤wtru 1571 ∈ wcel 2146 ⊆ wss 3906 × cxp 5661 ↾ cres 5665 ⟶wf 6537 (class class class)co 7420 ℂcc 11118 ℝcr 11119 − cmin 11461 −ℝ cresub 43204 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7743 ax-resscn 11177 ax-1cn 11178 ax-icn 11179 ax-addcl 11180 ax-addrcl 11181 ax-mulcl 11182 ax-mulrcl 11183 ax-addass 11185 ax-mulass 11186 ax-distr 11187 ax-i2m1 11188 ax-1ne0 11189 ax-1rid 11190 ax-rnegex 11191 ax-rrecex 11192 ax-cnre 11193 ax-pre-lttri 11194 ax-pre-lttrn 11195 ax-pre-ltadd 11196 |
| 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 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-rmo 3371 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-po 5571 df-so 5572 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-iota 6497 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-1st 7993 df-2nd 7994 df-er 8701 df-en 8951 df-dom 8952 df-sdom 8953 df-pnf 11265 df-mnf 11266 df-ltxr 11268 df-sub 11463 df-2 12323 df-3 12324 df-resub 43205 |
| This theorem is used by: (None) |
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