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| Mirrors > Home > MPE Home > Th. List > Mathboxes > sge0resrn | Structured version Visualization version GIF version | ||
| Description: The sum of nonnegative extended reals restricted to the range of a function is less than or equal to the sum of the composition of the two functions (well-order hypothesis allows to avoid using the axiom of choice). (Contributed by Glauco Siliprandi, 17-Aug-2020.) |
| Ref | Expression |
|---|---|
| sge0resrn.a | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
| sge0resrn.f | ⊢ (𝜑 → 𝐹:𝐵⟶(0[,]+∞)) |
| sge0resrn.g | ⊢ (𝜑 → 𝐺:𝐴⟶𝐵) |
| sge0resrn.r | ⊢ (𝜑 → 𝑅 We 𝐴) |
| Ref | Expression |
|---|---|
| sge0resrn | ⊢ (𝜑 → (Σ^‘(𝐹 ↾ ran 𝐺)) ≤ (Σ^‘(𝐹 ∘ 𝐺))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sge0resrn.g | . . . 4 ⊢ (𝜑 → 𝐺:𝐴⟶𝐵) | |
| 2 | 1 | ffnd 6710 | . . 3 ⊢ (𝜑 → 𝐺 Fn 𝐴) |
| 3 | sge0resrn.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
| 4 | sge0resrn.r | . . 3 ⊢ (𝜑 → 𝑅 We 𝐴) | |
| 5 | 2, 3, 4 | wessf1orn 46201 | . 2 ⊢ (𝜑 → ∃𝑥 ∈ 𝒫 𝐴(𝐺 ↾ 𝑥):𝑥–1-1-onto→ran 𝐺) |
| 6 | 3 | 3ad2ant1 1151 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝒫 𝐴 ∧ (𝐺 ↾ 𝑥):𝑥–1-1-onto→ran 𝐺) → 𝐴 ∈ 𝑉) |
| 7 | sge0resrn.f | . . . . . 6 ⊢ (𝜑 → 𝐹:𝐵⟶(0[,]+∞)) | |
| 8 | 7 | 3ad2ant1 1151 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝒫 𝐴 ∧ (𝐺 ↾ 𝑥):𝑥–1-1-onto→ran 𝐺) → 𝐹:𝐵⟶(0[,]+∞)) |
| 9 | 1 | 3ad2ant1 1151 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝒫 𝐴 ∧ (𝐺 ↾ 𝑥):𝑥–1-1-onto→ran 𝐺) → 𝐺:𝐴⟶𝐵) |
| 10 | simp2 1155 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝒫 𝐴 ∧ (𝐺 ↾ 𝑥):𝑥–1-1-onto→ran 𝐺) → 𝑥 ∈ 𝒫 𝐴) | |
| 11 | simp3 1156 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝒫 𝐴 ∧ (𝐺 ↾ 𝑥):𝑥–1-1-onto→ran 𝐺) → (𝐺 ↾ 𝑥):𝑥–1-1-onto→ran 𝐺) | |
| 12 | 6, 8, 9, 10, 11 | sge0resrnlem 47413 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝒫 𝐴 ∧ (𝐺 ↾ 𝑥):𝑥–1-1-onto→ran 𝐺) → (Σ^‘(𝐹 ↾ ran 𝐺)) ≤ (Σ^‘(𝐹 ∘ 𝐺))) |
| 13 | 12 | 3exp 1137 | . . 3 ⊢ (𝜑 → (𝑥 ∈ 𝒫 𝐴 → ((𝐺 ↾ 𝑥):𝑥–1-1-onto→ran 𝐺 → (Σ^‘(𝐹 ↾ ran 𝐺)) ≤ (Σ^‘(𝐹 ∘ 𝐺))))) |
| 14 | 13 | rexlimdv 3161 | . 2 ⊢ (𝜑 → (∃𝑥 ∈ 𝒫 𝐴(𝐺 ↾ 𝑥):𝑥–1-1-onto→ran 𝐺 → (Σ^‘(𝐹 ↾ ran 𝐺)) ≤ (Σ^‘(𝐹 ∘ 𝐺)))) |
| 15 | 5, 14 | mpd 16 | 1 ⊢ (𝜑 → (Σ^‘(𝐹 ↾ ran 𝐺)) ≤ (Σ^‘(𝐹 ∘ 𝐺))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ w3a 1103 ∈ wcel 2144 ∃wrex 3086 𝒫 cpw 4556 class class class wbr 5102 We wwe 5602 ran crn 5651 ↾ cres 5652 ∘ ccom 5654 ⟶wf 6534 –1-1-onto→wf1o 6537 ‘cfv 6538 (class class class)co 7420 0cc0 11200 +∞cpnf 11340 ≤ cle 11344 [,]cicc 13479 Σ^csumge0 47372 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-inf2 9642 ax-cnex 11256 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 ax-pre-mulgt0 11277 ax-pre-sup 11278 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-int 4907 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-se 5604 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-isom 6547 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-1st 8001 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-1o 8476 df-er 8717 df-en 8974 df-dom 8975 df-sdom 8976 df-fin 8977 df-sup 9434 df-oi 9504 df-card 10020 df-pnf 11345 df-mnf 11346 df-xr 11347 df-ltxr 11348 df-le 11349 df-sub 11543 df-neg 11544 df-div 11974 df-nn 12336 df-2 12405 df-3 12406 df-n0 12607 df-z 12694 df-uz 12966 df-rp 13121 df-ico 13482 df-icc 13483 df-fz 13640 df-fzo 13789 df-seq 14145 df-exp 14205 df-hash 14475 df-cj 15266 df-re 15267 df-im 15268 df-sqrt 15402 df-abs 15403 df-clim 15655 df-sum 15854 df-sumge0 47373 |
| This theorem is used by: omeiunle 47527 |
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