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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 12902 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 +𝑒 𝐵) ∈ ℝ*) | |
4 | 1, 2, 3 | syl2anc 583 | 1 ⊢ (𝜑 → (𝐴 +𝑒 𝐵) ∈ ℝ*) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2108 (class class class)co 7255 ℝ*cxr 10939 +𝑒 cxad 12775 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-1cn 10860 ax-addrcl 10863 ax-rnegex 10873 ax-cnre 10875 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-id 5480 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-fv 6426 df-ov 7258 df-oprab 7259 df-mpo 7260 df-1st 7804 df-2nd 7805 df-pnf 10942 df-mnf 10943 df-xr 10944 df-xadd 12778 |
This theorem is referenced by: xadd4d 12966 imasdsf1olem 23434 bldisj 23459 xblss2ps 23462 xblss2 23463 blcld 23567 comet 23575 stdbdxmet 23577 metdstri 23920 metdscnlem 23924 iscau3 24347 xlt2addrd 30983 xrge0addcld 30987 xrge0subcld 30988 xrofsup 30992 xrsmulgzz 31189 xrge0adddir 31203 xrge0adddi 31204 esumle 31926 esumlef 31930 omssubadd 32167 inelcarsg 32178 carsgclctunlem2 32186 carsgclctunlem3 32187 carsgclctun 32188 xle2addd 42765 infrpge 42780 xrlexaddrp 42781 infleinflem1 42799 infleinflem2 42800 limsupgtlem 43208 ismbl3 43417 ismbl4 43424 sge0prle 43829 sge0split 43837 sge0iunmptlemre 43843 sge0xaddlem1 43861 omeunle 43944 carageniuncl 43951 ovnsubaddlem1 43998 hspmbl 44057 ovolval5lem1 44080 |
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