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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 482 | . . . . 5 ⊢ ((𝑥 ∈ ℝ* ∧ 0 ≤ 𝑥) → 𝑥 ∈ ℝ*) | |
| 2 | ge0nemnf 13116 | . . . . 5 ⊢ ((𝑥 ∈ ℝ* ∧ 0 ≤ 𝑥) → 𝑥 ≠ -∞) | |
| 3 | 1, 2 | jca 511 | . . . 4 ⊢ ((𝑥 ∈ ℝ* ∧ 0 ≤ 𝑥) → (𝑥 ∈ ℝ* ∧ 𝑥 ≠ -∞)) |
| 4 | elxrge0 13401 | . . . 4 ⊢ (𝑥 ∈ (0[,]+∞) ↔ (𝑥 ∈ ℝ* ∧ 0 ≤ 𝑥)) | |
| 5 | eldifsn 4730 | . . . 4 ⊢ (𝑥 ∈ (ℝ* ∖ {-∞}) ↔ (𝑥 ∈ ℝ* ∧ 𝑥 ≠ -∞)) | |
| 6 | 3, 4, 5 | 3imtr4i 292 | . . 3 ⊢ (𝑥 ∈ (0[,]+∞) → 𝑥 ∈ (ℝ* ∖ {-∞})) |
| 7 | 6 | ssriv 3926 | . 2 ⊢ (0[,]+∞) ⊆ (ℝ* ∖ {-∞}) |
| 8 | 0e0iccpnf 13403 | . 2 ⊢ 0 ∈ (0[,]+∞) | |
| 9 | ge0xaddcl 13406 | . . 3 ⊢ ((𝑥 ∈ (0[,]+∞) ∧ 𝑦 ∈ (0[,]+∞)) → (𝑥 +𝑒 𝑦) ∈ (0[,]+∞)) | |
| 10 | 9 | rgen2 3178 | . 2 ⊢ ∀𝑥 ∈ (0[,]+∞)∀𝑦 ∈ (0[,]+∞)(𝑥 +𝑒 𝑦) ∈ (0[,]+∞) |
| 11 | xrs1mnd.1 | . . . 4 ⊢ 𝑅 = (ℝ*𝑠 ↾s (ℝ* ∖ {-∞})) | |
| 12 | 11 | xrs1mnd 21430 | . . 3 ⊢ 𝑅 ∈ Mnd |
| 13 | difss 4077 | . . . . 5 ⊢ (ℝ* ∖ {-∞}) ⊆ ℝ* | |
| 14 | xrsbas 17561 | . . . . . 6 ⊢ ℝ* = (Base‘ℝ*𝑠) | |
| 15 | 11, 14 | ressbas2 17199 | . . . . 5 ⊢ ((ℝ* ∖ {-∞}) ⊆ ℝ* → (ℝ* ∖ {-∞}) = (Base‘𝑅)) |
| 16 | 13, 15 | ax-mp 5 | . . . 4 ⊢ (ℝ* ∖ {-∞}) = (Base‘𝑅) |
| 17 | 11 | xrs10 21431 | . . . 4 ⊢ 0 = (0g‘𝑅) |
| 18 | xrex 12928 | . . . . . 6 ⊢ ℝ* ∈ V | |
| 19 | 18 | difexi 5267 | . . . . 5 ⊢ (ℝ* ∖ {-∞}) ∈ V |
| 20 | xrsadd 21375 | . . . . . 6 ⊢ +𝑒 = (+g‘ℝ*𝑠) | |
| 21 | 11, 20 | ressplusg 17245 | . . . . 5 ⊢ ((ℝ* ∖ {-∞}) ∈ V → +𝑒 = (+g‘𝑅)) |
| 22 | 19, 21 | ax-mp 5 | . . . 4 ⊢ +𝑒 = (+g‘𝑅) |
| 23 | 16, 17, 22 | issubm 18762 | . . 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 1343 | 1 ⊢ (0[,]+∞) ∈ (SubMnd‘𝑅) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∧ wa 395 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 ≠ wne 2933 ∀wral 3052 Vcvv 3430 ∖ cdif 3887 ⊆ wss 3890 {csn 4568 class class class wbr 5086 ‘cfv 6492 (class class class)co 7360 0cc0 11029 +∞cpnf 11167 -∞cmnf 11168 ℝ*cxr 11169 ≤ cle 11171 +𝑒 cxad 13052 [,]cicc 13292 Basecbs 17170 ↾s cress 17191 +gcplusg 17211 ℝ*𝑠cxrs 17455 Mndcmnd 18693 SubMndcsubmnd 18741 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5231 ax-nul 5241 ax-pow 5302 ax-pr 5370 ax-un 7682 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-tp 4573 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-1st 7935 df-2nd 7936 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8342 df-1o 8398 df-er 8636 df-en 8887 df-dom 8888 df-sdom 8889 df-fin 8890 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-nn 12166 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 df-9 12242 df-n0 12429 df-z 12516 df-dec 12636 df-uz 12780 df-xadd 13055 df-icc 13296 df-fz 13453 df-struct 17108 df-sets 17125 df-slot 17143 df-ndx 17155 df-base 17171 df-ress 17192 df-plusg 17224 df-mulr 17225 df-tset 17230 df-ple 17231 df-ds 17233 df-0g 17395 df-xrs 17457 df-mgm 18599 df-sgrp 18678 df-mnd 18694 df-submnd 18743 |
| This theorem is referenced by: xrge0cmn 21434 xrge0gsumle 24809 xrge0tsms 24810 xrge0tsmsd 33149 |
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