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Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > supsubc | Structured version Visualization version GIF version |
Description: The supremum function distributes over subtraction in a sense similar to that in supaddc 11282. (Contributed by Glauco Siliprandi, 21-Nov-2020.) |
Ref | Expression |
---|---|
supsubc.a1 | ⊢ (𝜑 → 𝐴 ⊆ ℝ) |
supsubc.a2 | ⊢ (𝜑 → 𝐴 ≠ ∅) |
supsubc.a3 | ⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥) |
supsubc.b | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
supsubc.c | ⊢ 𝐶 = {𝑧 ∣ ∃𝑣 ∈ 𝐴 𝑧 = (𝑣 − 𝐵)} |
Ref | Expression |
---|---|
supsubc | ⊢ (𝜑 → (sup(𝐴, ℝ, < ) − 𝐵) = sup(𝐶, ℝ, < )) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | supsubc.c | . . . . 5 ⊢ 𝐶 = {𝑧 ∣ ∃𝑣 ∈ 𝐴 𝑧 = (𝑣 − 𝐵)} | |
2 | 1 | a1i 11 | . . . 4 ⊢ (𝜑 → 𝐶 = {𝑧 ∣ ∃𝑣 ∈ 𝐴 𝑧 = (𝑣 − 𝐵)}) |
3 | supsubc.a1 | . . . . . . . . . . 11 ⊢ (𝜑 → 𝐴 ⊆ ℝ) | |
4 | 3 | sselda 3798 | . . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑣 ∈ 𝐴) → 𝑣 ∈ ℝ) |
5 | 4 | recnd 10357 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑣 ∈ 𝐴) → 𝑣 ∈ ℂ) |
6 | supsubc.b | . . . . . . . . . . 11 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
7 | 6 | recnd 10357 | . . . . . . . . . 10 ⊢ (𝜑 → 𝐵 ∈ ℂ) |
8 | 7 | adantr 473 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑣 ∈ 𝐴) → 𝐵 ∈ ℂ) |
9 | 5, 8 | negsubd 10690 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑣 ∈ 𝐴) → (𝑣 + -𝐵) = (𝑣 − 𝐵)) |
10 | 9 | eqcomd 2805 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑣 ∈ 𝐴) → (𝑣 − 𝐵) = (𝑣 + -𝐵)) |
11 | 10 | eqeq2d 2809 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑣 ∈ 𝐴) → (𝑧 = (𝑣 − 𝐵) ↔ 𝑧 = (𝑣 + -𝐵))) |
12 | 11 | rexbidva 3230 | . . . . 5 ⊢ (𝜑 → (∃𝑣 ∈ 𝐴 𝑧 = (𝑣 − 𝐵) ↔ ∃𝑣 ∈ 𝐴 𝑧 = (𝑣 + -𝐵))) |
13 | 12 | abbidv 2918 | . . . 4 ⊢ (𝜑 → {𝑧 ∣ ∃𝑣 ∈ 𝐴 𝑧 = (𝑣 − 𝐵)} = {𝑧 ∣ ∃𝑣 ∈ 𝐴 𝑧 = (𝑣 + -𝐵)}) |
14 | eqidd 2800 | . . . 4 ⊢ (𝜑 → {𝑧 ∣ ∃𝑣 ∈ 𝐴 𝑧 = (𝑣 + -𝐵)} = {𝑧 ∣ ∃𝑣 ∈ 𝐴 𝑧 = (𝑣 + -𝐵)}) | |
15 | 2, 13, 14 | 3eqtrd 2837 | . . 3 ⊢ (𝜑 → 𝐶 = {𝑧 ∣ ∃𝑣 ∈ 𝐴 𝑧 = (𝑣 + -𝐵)}) |
16 | 15 | supeq1d 8594 | . 2 ⊢ (𝜑 → sup(𝐶, ℝ, < ) = sup({𝑧 ∣ ∃𝑣 ∈ 𝐴 𝑧 = (𝑣 + -𝐵)}, ℝ, < )) |
17 | supsubc.a2 | . . . 4 ⊢ (𝜑 → 𝐴 ≠ ∅) | |
18 | supsubc.a3 | . . . 4 ⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥) | |
19 | 6 | renegcld 10749 | . . . 4 ⊢ (𝜑 → -𝐵 ∈ ℝ) |
20 | eqid 2799 | . . . 4 ⊢ {𝑧 ∣ ∃𝑣 ∈ 𝐴 𝑧 = (𝑣 + -𝐵)} = {𝑧 ∣ ∃𝑣 ∈ 𝐴 𝑧 = (𝑣 + -𝐵)} | |
21 | 3, 17, 18, 19, 20 | supaddc 11282 | . . 3 ⊢ (𝜑 → (sup(𝐴, ℝ, < ) + -𝐵) = sup({𝑧 ∣ ∃𝑣 ∈ 𝐴 𝑧 = (𝑣 + -𝐵)}, ℝ, < )) |
22 | 21 | eqcomd 2805 | . 2 ⊢ (𝜑 → sup({𝑧 ∣ ∃𝑣 ∈ 𝐴 𝑧 = (𝑣 + -𝐵)}, ℝ, < ) = (sup(𝐴, ℝ, < ) + -𝐵)) |
23 | suprcl 11275 | . . . . 5 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥) → sup(𝐴, ℝ, < ) ∈ ℝ) | |
24 | 3, 17, 18, 23 | syl3anc 1491 | . . . 4 ⊢ (𝜑 → sup(𝐴, ℝ, < ) ∈ ℝ) |
25 | 24 | recnd 10357 | . . 3 ⊢ (𝜑 → sup(𝐴, ℝ, < ) ∈ ℂ) |
26 | 25, 7 | negsubd 10690 | . 2 ⊢ (𝜑 → (sup(𝐴, ℝ, < ) + -𝐵) = (sup(𝐴, ℝ, < ) − 𝐵)) |
27 | 16, 22, 26 | 3eqtrrd 2838 | 1 ⊢ (𝜑 → (sup(𝐴, ℝ, < ) − 𝐵) = sup(𝐶, ℝ, < )) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 385 = wceq 1653 ∈ wcel 2157 {cab 2785 ≠ wne 2971 ∀wral 3089 ∃wrex 3090 ⊆ wss 3769 ∅c0 4115 class class class wbr 4843 (class class class)co 6878 supcsup 8588 ℂcc 10222 ℝcr 10223 + caddc 10227 < clt 10363 ≤ cle 10364 − cmin 10556 -cneg 10557 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1891 ax-4 1905 ax-5 2006 ax-6 2072 ax-7 2107 ax-8 2159 ax-9 2166 ax-10 2185 ax-11 2200 ax-12 2213 ax-13 2377 ax-ext 2777 ax-sep 4975 ax-nul 4983 ax-pow 5035 ax-pr 5097 ax-un 7183 ax-resscn 10281 ax-1cn 10282 ax-icn 10283 ax-addcl 10284 ax-addrcl 10285 ax-mulcl 10286 ax-mulrcl 10287 ax-mulcom 10288 ax-addass 10289 ax-mulass 10290 ax-distr 10291 ax-i2m1 10292 ax-1ne0 10293 ax-1rid 10294 ax-rnegex 10295 ax-rrecex 10296 ax-cnre 10297 ax-pre-lttri 10298 ax-pre-lttrn 10299 ax-pre-ltadd 10300 ax-pre-mulgt0 10301 ax-pre-sup 10302 |
This theorem depends on definitions: df-bi 199 df-an 386 df-or 875 df-3or 1109 df-3an 1110 df-tru 1657 df-ex 1876 df-nf 1880 df-sb 2065 df-mo 2591 df-eu 2609 df-clab 2786 df-cleq 2792 df-clel 2795 df-nfc 2930 df-ne 2972 df-nel 3075 df-ral 3094 df-rex 3095 df-reu 3096 df-rmo 3097 df-rab 3098 df-v 3387 df-sbc 3634 df-csb 3729 df-dif 3772 df-un 3774 df-in 3776 df-ss 3783 df-nul 4116 df-if 4278 df-pw 4351 df-sn 4369 df-pr 4371 df-op 4375 df-uni 4629 df-br 4844 df-opab 4906 df-mpt 4923 df-id 5220 df-po 5233 df-so 5234 df-xp 5318 df-rel 5319 df-cnv 5320 df-co 5321 df-dm 5322 df-rn 5323 df-res 5324 df-ima 5325 df-iota 6064 df-fun 6103 df-fn 6104 df-f 6105 df-f1 6106 df-fo 6107 df-f1o 6108 df-fv 6109 df-riota 6839 df-ov 6881 df-oprab 6882 df-mpt2 6883 df-er 7982 df-en 8196 df-dom 8197 df-sdom 8198 df-sup 8590 df-pnf 10365 df-mnf 10366 df-xr 10367 df-ltxr 10368 df-le 10369 df-sub 10558 df-neg 10559 |
This theorem is referenced by: hoidmvlelem1 41555 |
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