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| Mirrors > Home > MPE Home > Th. List > xrge0subm | Structured version Visualization version GIF version | ||
| Description: The nonnegative extended real numbers are a submonoid of the nonnegative-infinite extended reals. (Contributed by Mario Carneiro, 21-Aug-2015.) |
| Ref | Expression |
|---|---|
| xrs1mnd.1 | ⊢ 𝑅 = (ℝ*𝑠 ↾s (ℝ* ∖ {-∞})) |
| Ref | Expression |
|---|---|
| xrge0subm | ⊢ (0[,]+∞) ∈ (SubMnd‘𝑅) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpl 488 | . . . . 5 ⊢ ((𝑥 ∈ ℝ* ∧ 0 ≤ 𝑥) → 𝑥 ∈ ℝ*) | |
| 2 | ge0nemnf 13307 | . . . . 5 ⊢ ((𝑥 ∈ ℝ* ∧ 0 ≤ 𝑥) → 𝑥 ≠ -∞) | |
| 3 | 1, 2 | jca 521 | . . . 4 ⊢ ((𝑥 ∈ ℝ* ∧ 0 ≤ 𝑥) → (𝑥 ∈ ℝ* ∧ 𝑥 ≠ -∞)) |
| 4 | elxrge0 13592 | . . . 4 ⊢ (𝑥 ∈ (0[,]+∞) ↔ (𝑥 ∈ ℝ* ∧ 0 ≤ 𝑥)) | |
| 5 | eldifsn 4744 | . . . 4 ⊢ (𝑥 ∈ (ℝ* ∖ {-∞}) ↔ (𝑥 ∈ ℝ* ∧ 𝑥 ≠ -∞)) | |
| 6 | 3, 4, 5 | 3imtr4i 295 | . . 3 ⊢ (𝑥 ∈ (0[,]+∞) → 𝑥 ∈ (ℝ* ∖ {-∞})) |
| 7 | 6 | ssriv 3912 | . 2 ⊢ (0[,]+∞) ⊆ (ℝ* ∖ {-∞}) |
| 8 | 0e0iccpnf 13594 | . 2 ⊢ 0 ∈ (0[,]+∞) | |
| 9 | ge0xaddcl 13597 | . . 3 ⊢ ((𝑥 ∈ (0[,]+∞) ∧ 𝑦 ∈ (0[,]+∞)) → (𝑥 +e 𝑦) ∈ (0[,]+∞)) | |
| 10 | 9 | rgen2 3202 | . 2 ⊢ ∀𝑥 ∈ (0[,]+∞)∀𝑦 ∈ (0[,]+∞)(𝑥 +e 𝑦) ∈ (0[,]+∞) |
| 11 | xrs1mnd.1 | . . . 4 ⊢ 𝑅 = (ℝ*𝑠 ↾s (ℝ* ∖ {-∞})) | |
| 12 | 11 | xrs1mnd 21752 | . . 3 ⊢ 𝑅 ∈ Mnd |
| 13 | difss 4072 | . . . . 5 ⊢ (ℝ* ∖ {-∞}) ⊆ ℝ* | |
| 14 | xrsbas 17784 | . . . . . 6 ⊢ ℝ* = (Base‘ℝ*𝑠) | |
| 15 | 11, 14 | ressbas2 17422 | . . . . 5 ⊢ ((ℝ* ∖ {-∞}) ⊆ ℝ* → (ℝ* ∖ {-∞}) = (Base‘𝑅)) |
| 16 | 13, 15 | ax-mp 5 | . . . 4 ⊢ (ℝ* ∖ {-∞}) = (Base‘𝑅) |
| 17 | 11 | xrs10 21753 | . . . 4 ⊢ 0 = (0g‘𝑅) |
| 18 | xrex 13119 | . . . . . 6 ⊢ ℝ* ∈ V | |
| 19 | 18 | difexi 5291 | . . . . 5 ⊢ (ℝ* ∖ {-∞}) ∈ V |
| 20 | xrsadd 21702 | . . . . . 6 ⊢ +e = (+g‘ℝ*𝑠) | |
| 21 | 11, 20 | ressplusg 17468 | . . . . 5 ⊢ ((ℝ* ∖ {-∞}) ∈ V → +e = (+g‘𝑅)) |
| 22 | 19, 21 | ax-mp 5 | . . . 4 ⊢ +e = (+g‘𝑅) |
| 23 | 16, 17, 22 | issubm 19004 | . . 3 ⊢ (𝑅 ∈ Mnd → ((0[,]+∞) ∈ (SubMnd‘𝑅) ↔ ((0[,]+∞) ⊆ (ℝ* ∖ {-∞}) ∧ 0 ∈ (0[,]+∞) ∧ ∀𝑥 ∈ (0[,]+∞)∀𝑦 ∈ (0[,]+∞)(𝑥 +e 𝑦) ∈ (0[,]+∞)))) |
| 24 | 12, 23 | ax-mp 5 | . 2 ⊢ ((0[,]+∞) ∈ (SubMnd‘𝑅) ↔ ((0[,]+∞) ⊆ (ℝ* ∖ {-∞}) ∧ 0 ∈ (0[,]+∞) ∧ ∀𝑥 ∈ (0[,]+∞)∀𝑦 ∈ (0[,]+∞)(𝑥 +e 𝑦) ∈ (0[,]+∞))) |
| 25 | 7, 8, 10, 24 | mpbir3an 1360 | 1 ⊢ (0[,]+∞) ∈ (SubMnd‘𝑅) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 ∧ wa 401 ∧ w3a 1103 = wceq 1569 ∈ wcel 2144 ≠ wne 2955 ∀wral 3076 Vcvv 3450 ⊆ wss 3895 ∖ cdif 4045 {csn 4584 class class class wbr 5102 ‘cfv 6539 (class class class)co 7421 0cc0 11204 +∞cpnf 11344 -∞cmnf 11345 ℝ*cxr 11346 ≤ cle 11348 +e cxad 13243 [,]cicc 13483 Basecbs 17393 ↾s cress 17414 +gcplusg 17434 ℝ*𝑠cxrs 17678 Mndcmnd 18929 SubMndcsubmnd 18983 |
| 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-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7752 ax-cnex 11260 ax-resscn 11261 ax-1cn 11262 ax-icn 11263 ax-addcl 11264 ax-addrcl 11265 ax-mulcl 11266 ax-mulrcl 11267 ax-mulcom 11268 ax-addass 11269 ax-mulass 11270 ax-distr 11271 ax-i2m1 11272 ax-1ne0 11273 ax-1rid 11274 ax-rnegex 11275 ax-rrecex 11276 ax-cnre 11277 ax-pre-lttri 11278 ax-pre-lttrn 11279 ax-pre-ltadd 11280 ax-pre-mulgt0 11281 |
| 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 4585 df-pr 4587 df-tp 4589 df-op 4835 df-uni 4867 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-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 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-riota 7378 df-ov 7424 df-oprab 7425 df-mpo 7426 df-om 7879 df-1st 8002 df-2nd 8003 df-frecs 8303 df-wrecs 8334 df-recs 8383 df-rdg 8422 df-1o 8480 df-er 8721 df-en 8978 df-dom 8979 df-sdom 8980 df-fin 8981 df-pnf 11349 df-mnf 11350 df-xr 11351 df-ltxr 11352 df-le 11353 df-sub 11547 df-neg 11548 df-nn 12340 df-2 12409 df-3 12410 df-4 12411 df-5 12412 df-6 12413 df-7 12414 df-8 12415 df-9 12416 df-n0 12611 df-z 12698 df-dec 12819 df-uz 12970 df-xadd 13246 df-icc 13487 df-fz 13644 df-struct 17331 df-sets 17348 df-slot 17366 df-ndx 17378 df-base 17394 df-ress 17415 df-plusg 17447 df-mulr 17448 df-tset 17453 df-ple 17454 df-ds 17456 df-0g 17618 df-xrs 17680 df-mgm 18822 df-sgrp 18914 df-mnd 18930 df-submnd 18985 |
| This theorem is used by: xrge0cmn 21756 xrge0gsumle 25159 xrge0tsms 25160 xrge0tsmsd 33681 |
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