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| Mirrors > Home > MPE Home > Th. List > xaddcld | Structured version Visualization version GIF version | ||
| Description: The extended real addition operation is closed in extended reals. (Contributed by Mario Carneiro, 28-May-2016.) |
| Ref | Expression |
|---|---|
| xnegcld.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| xaddcld.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ*) |
| Ref | Expression |
|---|---|
| xaddcld | ⊢ (𝜑 → (𝐴 +𝑒 𝐵) ∈ ℝ*) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xnegcld.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ*) | |
| 2 | xaddcld.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℝ*) | |
| 3 | xaddcl 13168 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 +𝑒 𝐵) ∈ ℝ*) | |
| 4 | 1, 2, 3 | syl2anc 585 | 1 ⊢ (𝜑 → (𝐴 +𝑒 𝐵) ∈ ℝ*) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2114 (class class class)co 7370 ℝ*cxr 11179 +𝑒 cxad 13038 |
| 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 5245 ax-nul 5255 ax-pow 5314 ax-pr 5381 ax-un 7692 ax-cnex 11096 ax-1cn 11098 ax-addrcl 11101 ax-rnegex 11111 ax-cnre 11113 |
| 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-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5529 df-xp 5640 df-rel 5641 df-cnv 5642 df-co 5643 df-dm 5644 df-rn 5645 df-res 5646 df-ima 5647 df-iota 6458 df-fun 6504 df-fn 6505 df-f 6506 df-fv 6510 df-ov 7373 df-oprab 7374 df-mpo 7375 df-1st 7945 df-2nd 7946 df-pnf 11182 df-mnf 11183 df-xr 11184 df-xadd 13041 |
| This theorem is referenced by: xadd4d 13232 imasdsf1olem 24334 bldisj 24359 xblss2ps 24362 xblss2 24363 blcld 24466 comet 24474 stdbdxmet 24476 metdstri 24813 metdscnlem 24817 iscau3 25251 xlt2addrd 32856 xrge0addcld 32859 xrge0subcld 32860 xrofsup 32864 xrsmulgzz 33108 xrge0adddir 33117 xrge0adddi 33118 esumle 34242 esumlef 34246 omssubadd 34484 inelcarsg 34495 carsgclctunlem2 34503 carsgclctunlem3 34504 carsgclctun 34505 xle2addd 45724 infrpge 45739 xrlexaddrp 45740 infleinflem1 45757 infleinflem2 45758 limsupgtlem 46164 ismbl3 46373 ismbl4 46380 sge0prle 46788 sge0split 46796 sge0iunmptlemre 46802 sge0xaddlem1 46820 omeunle 46903 carageniuncl 46910 ovnsubaddlem1 46957 hspmbl 47016 ovolval5lem1 47039 |
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