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| Mirrors > Home > MPE Home > Th. List > rollelem | Structured version Visualization version GIF version | ||
| Description: Lemma for rolle 26028. (Contributed by Mario Carneiro, 1-Sep-2014.) |
| Ref | Expression |
|---|---|
| rolle.a | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| rolle.b | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| rolle.lt | ⊢ (𝜑 → 𝐴 < 𝐵) |
| rolle.f | ⊢ (𝜑 → 𝐹 ∈ ((𝐴[,]𝐵)–cn→ℝ)) |
| rolle.d | ⊢ (𝜑 → dom (ℝ D 𝐹) = (𝐴(,)𝐵)) |
| rolle.r | ⊢ (𝜑 → ∀𝑦 ∈ (𝐴[,]𝐵)(𝐹‘𝑦) ≤ (𝐹‘𝑈)) |
| rolle.u | ⊢ (𝜑 → 𝑈 ∈ (𝐴[,]𝐵)) |
| rolle.n | ⊢ (𝜑 → ¬ 𝑈 ∈ {𝐴, 𝐵}) |
| Ref | Expression |
|---|---|
| rollelem | ⊢ (𝜑 → ∃𝑥 ∈ (𝐴(,)𝐵)((ℝ D 𝐹)‘𝑥) = 0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rolle.n | . . 3 ⊢ (𝜑 → ¬ 𝑈 ∈ {𝐴, 𝐵}) | |
| 2 | rolle.u | . . . . . 6 ⊢ (𝜑 → 𝑈 ∈ (𝐴[,]𝐵)) | |
| 3 | rolle.a | . . . . . . . 8 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 4 | 3 | rexrd 11311 | . . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| 5 | rolle.b | . . . . . . . 8 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
| 6 | 5 | rexrd 11311 | . . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ ℝ*) |
| 7 | rolle.lt | . . . . . . . 8 ⊢ (𝜑 → 𝐴 < 𝐵) | |
| 8 | 3, 5, 7 | ltled 11409 | . . . . . . 7 ⊢ (𝜑 → 𝐴 ≤ 𝐵) |
| 9 | prunioo 13521 | . . . . . . 7 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐴 ≤ 𝐵) → ((𝐴(,)𝐵) ∪ {𝐴, 𝐵}) = (𝐴[,]𝐵)) | |
| 10 | 4, 6, 8, 9 | syl3anc 1373 | . . . . . 6 ⊢ (𝜑 → ((𝐴(,)𝐵) ∪ {𝐴, 𝐵}) = (𝐴[,]𝐵)) |
| 11 | 2, 10 | eleqtrrd 2844 | . . . . 5 ⊢ (𝜑 → 𝑈 ∈ ((𝐴(,)𝐵) ∪ {𝐴, 𝐵})) |
| 12 | elun 4153 | . . . . 5 ⊢ (𝑈 ∈ ((𝐴(,)𝐵) ∪ {𝐴, 𝐵}) ↔ (𝑈 ∈ (𝐴(,)𝐵) ∨ 𝑈 ∈ {𝐴, 𝐵})) | |
| 13 | 11, 12 | sylib 218 | . . . 4 ⊢ (𝜑 → (𝑈 ∈ (𝐴(,)𝐵) ∨ 𝑈 ∈ {𝐴, 𝐵})) |
| 14 | 13 | ord 865 | . . 3 ⊢ (𝜑 → (¬ 𝑈 ∈ (𝐴(,)𝐵) → 𝑈 ∈ {𝐴, 𝐵})) |
| 15 | 1, 14 | mt3d 148 | . 2 ⊢ (𝜑 → 𝑈 ∈ (𝐴(,)𝐵)) |
| 16 | rolle.f | . . . 4 ⊢ (𝜑 → 𝐹 ∈ ((𝐴[,]𝐵)–cn→ℝ)) | |
| 17 | cncff 24919 | . . . 4 ⊢ (𝐹 ∈ ((𝐴[,]𝐵)–cn→ℝ) → 𝐹:(𝐴[,]𝐵)⟶ℝ) | |
| 18 | 16, 17 | syl 17 | . . 3 ⊢ (𝜑 → 𝐹:(𝐴[,]𝐵)⟶ℝ) |
| 19 | iccssre 13469 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴[,]𝐵) ⊆ ℝ) | |
| 20 | 3, 5, 19 | syl2anc 584 | . . 3 ⊢ (𝜑 → (𝐴[,]𝐵) ⊆ ℝ) |
| 21 | ioossicc 13473 | . . . 4 ⊢ (𝐴(,)𝐵) ⊆ (𝐴[,]𝐵) | |
| 22 | 21 | a1i 11 | . . 3 ⊢ (𝜑 → (𝐴(,)𝐵) ⊆ (𝐴[,]𝐵)) |
| 23 | rolle.d | . . . 4 ⊢ (𝜑 → dom (ℝ D 𝐹) = (𝐴(,)𝐵)) | |
| 24 | 15, 23 | eleqtrrd 2844 | . . 3 ⊢ (𝜑 → 𝑈 ∈ dom (ℝ D 𝐹)) |
| 25 | rolle.r | . . . 4 ⊢ (𝜑 → ∀𝑦 ∈ (𝐴[,]𝐵)(𝐹‘𝑦) ≤ (𝐹‘𝑈)) | |
| 26 | ssralv 4052 | . . . 4 ⊢ ((𝐴(,)𝐵) ⊆ (𝐴[,]𝐵) → (∀𝑦 ∈ (𝐴[,]𝐵)(𝐹‘𝑦) ≤ (𝐹‘𝑈) → ∀𝑦 ∈ (𝐴(,)𝐵)(𝐹‘𝑦) ≤ (𝐹‘𝑈))) | |
| 27 | 22, 25, 26 | sylc 65 | . . 3 ⊢ (𝜑 → ∀𝑦 ∈ (𝐴(,)𝐵)(𝐹‘𝑦) ≤ (𝐹‘𝑈)) |
| 28 | 18, 20, 15, 22, 24, 27 | dvferm 26026 | . 2 ⊢ (𝜑 → ((ℝ D 𝐹)‘𝑈) = 0) |
| 29 | fveqeq2 6915 | . . 3 ⊢ (𝑥 = 𝑈 → (((ℝ D 𝐹)‘𝑥) = 0 ↔ ((ℝ D 𝐹)‘𝑈) = 0)) | |
| 30 | 29 | rspcev 3622 | . 2 ⊢ ((𝑈 ∈ (𝐴(,)𝐵) ∧ ((ℝ D 𝐹)‘𝑈) = 0) → ∃𝑥 ∈ (𝐴(,)𝐵)((ℝ D 𝐹)‘𝑥) = 0) |
| 31 | 15, 28, 30 | syl2anc 584 | 1 ⊢ (𝜑 → ∃𝑥 ∈ (𝐴(,)𝐵)((ℝ D 𝐹)‘𝑥) = 0) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∨ wo 848 = wceq 1540 ∈ wcel 2108 ∀wral 3061 ∃wrex 3070 ∪ cun 3949 ⊆ wss 3951 {cpr 4628 class class class wbr 5143 dom cdm 5685 ⟶wf 6557 ‘cfv 6561 (class class class)co 7431 ℝcr 11154 0cc0 11155 ℝ*cxr 11294 < clt 11295 ≤ cle 11296 (,)cioo 13387 [,]cicc 13390 –cn→ccncf 24902 D cdv 25898 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2708 ax-rep 5279 ax-sep 5296 ax-nul 5306 ax-pow 5365 ax-pr 5432 ax-un 7755 ax-cnex 11211 ax-resscn 11212 ax-1cn 11213 ax-icn 11214 ax-addcl 11215 ax-addrcl 11216 ax-mulcl 11217 ax-mulrcl 11218 ax-mulcom 11219 ax-addass 11220 ax-mulass 11221 ax-distr 11222 ax-i2m1 11223 ax-1ne0 11224 ax-1rid 11225 ax-rnegex 11226 ax-rrecex 11227 ax-cnre 11228 ax-pre-lttri 11229 ax-pre-lttrn 11230 ax-pre-ltadd 11231 ax-pre-mulgt0 11232 ax-pre-sup 11233 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2892 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3380 df-reu 3381 df-rab 3437 df-v 3482 df-sbc 3789 df-csb 3900 df-dif 3954 df-un 3956 df-in 3958 df-ss 3968 df-pss 3971 df-nul 4334 df-if 4526 df-pw 4602 df-sn 4627 df-pr 4629 df-tp 4631 df-op 4633 df-uni 4908 df-int 4947 df-iun 4993 df-iin 4994 df-br 5144 df-opab 5206 df-mpt 5226 df-tr 5260 df-id 5578 df-eprel 5584 df-po 5592 df-so 5593 df-fr 5637 df-we 5639 df-xp 5691 df-rel 5692 df-cnv 5693 df-co 5694 df-dm 5695 df-rn 5696 df-res 5697 df-ima 5698 df-pred 6321 df-ord 6387 df-on 6388 df-lim 6389 df-suc 6390 df-iota 6514 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-om 7888 df-1st 8014 df-2nd 8015 df-frecs 8306 df-wrecs 8337 df-recs 8411 df-rdg 8450 df-1o 8506 df-er 8745 df-map 8868 df-pm 8869 df-en 8986 df-dom 8987 df-sdom 8988 df-fin 8989 df-fi 9451 df-sup 9482 df-inf 9483 df-pnf 11297 df-mnf 11298 df-xr 11299 df-ltxr 11300 df-le 11301 df-sub 11494 df-neg 11495 df-div 11921 df-nn 12267 df-2 12329 df-3 12330 df-4 12331 df-5 12332 df-6 12333 df-7 12334 df-8 12335 df-9 12336 df-n0 12527 df-z 12614 df-dec 12734 df-uz 12879 df-q 12991 df-rp 13035 df-xneg 13154 df-xadd 13155 df-xmul 13156 df-ioo 13391 df-ico 13393 df-icc 13394 df-fz 13548 df-seq 14043 df-exp 14103 df-cj 15138 df-re 15139 df-im 15140 df-sqrt 15274 df-abs 15275 df-struct 17184 df-slot 17219 df-ndx 17231 df-base 17248 df-plusg 17310 df-mulr 17311 df-starv 17312 df-tset 17316 df-ple 17317 df-ds 17319 df-unif 17320 df-rest 17467 df-topn 17468 df-topgen 17488 df-psmet 21356 df-xmet 21357 df-met 21358 df-bl 21359 df-mopn 21360 df-fbas 21361 df-fg 21362 df-cnfld 21365 df-top 22900 df-topon 22917 df-topsp 22939 df-bases 22953 df-cld 23027 df-ntr 23028 df-cls 23029 df-nei 23106 df-lp 23144 df-perf 23145 df-cn 23235 df-cnp 23236 df-haus 23323 df-fil 23854 df-fm 23946 df-flim 23947 df-flf 23948 df-xms 24330 df-ms 24331 df-cncf 24904 df-limc 25901 df-dv 25902 |
| This theorem is referenced by: rolle 26028 |
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