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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 13186 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 +𝑒 𝐵) ∈ ℝ*) | |
| 4 | 1, 2, 3 | syl2anc 591 | 1 ⊢ (𝜑 → (𝐴 +𝑒 𝐵) ∈ ℝ*) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2121 (class class class)co 7360 ℝ*cxr 11173 +𝑒 cxad 13056 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 ax-cnex 11089 ax-1cn 11091 ax-addrcl 11094 ax-rnegex 11104 ax-cnre 11106 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-ral 3056 df-rex 3066 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 df-id 5516 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-fv 6497 df-ov 7363 df-oprab 7364 df-mpo 7365 df-1st 7935 df-2nd 7936 df-pnf 11176 df-mnf 11177 df-xr 11178 df-xadd 13059 |
| This theorem is referenced by: xadd4d 13250 imasdsf1olem 24360 bldisj 24385 xblss2ps 24388 xblss2 24389 blcld 24492 comet 24500 stdbdxmet 24502 metdstri 24839 metdscnlem 24843 iscau3 25267 xlt2addrd 32855 xrge0addcld 32858 xrge0subcld 32859 xrofsup 32863 xrsmulgzz 33092 xrge0adddir 33101 xrge0adddi 33102 esumle 34254 esumlef 34258 omssubadd 34496 inelcarsg 34507 carsgclctunlem2 34515 carsgclctunlem3 34516 carsgclctun 34517 xle2addd 45795 infrpge 45810 xrlexaddrp 45811 infleinflem1 45828 infleinflem2 45829 limsupgtlem 46234 ismbl3 46443 ismbl4 46450 sge0prle 46858 sge0split 46866 sge0iunmptlemre 46872 sge0xaddlem1 46890 omeunle 46973 carageniuncl 46980 ovnsubaddlem1 47027 hspmbl 47086 ovolval5lem1 47109 |
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