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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 13244 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 +𝑒 𝐵) ∈ ℝ*) | |
| 4 | 1, 2, 3 | syl2anc 593 | 1 ⊢ (𝜑 → (𝐴 +𝑒 𝐵) ∈ ℝ*) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2144 (class class class)co 7398 ℝ*cxr 11217 +𝑒 cxad 13114 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1817 ax-4 1831 ax-5 1932 ax-6 1989 ax-7 2030 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2214 ax-ext 2736 ax-sep 5248 ax-nul 5258 ax-pow 5324 ax-pr 5392 ax-un 7720 ax-cnex 11131 ax-1cn 11133 ax-addrcl 11136 ax-rnegex 11146 ax-cnre 11148 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1565 df-fal 1575 df-ex 1802 df-nf 1806 df-sb 2093 df-mo 2568 df-eu 2598 df-clab 2743 df-cleq 2756 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3079 df-rex 3089 df-rab 3417 df-v 3458 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-id 5544 df-xp 5655 df-rel 5656 df-cnv 5657 df-co 5658 df-dm 5659 df-rn 5660 df-res 5661 df-ima 5662 df-iota 6479 df-fun 6525 df-fn 6526 df-f 6527 df-fv 6531 df-ov 7401 df-oprab 7402 df-mpo 7403 df-1st 7972 df-2nd 7973 df-pnf 11220 df-mnf 11221 df-xr 11222 df-xadd 13117 |
| This theorem is referenced by: xadd4d 13308 imasdsf1olem 24435 bldisj 24460 xblss2ps 24463 xblss2 24464 blcld 24567 comet 24575 stdbdxmet 24577 metdstri 24914 metdscnlem 24918 iscau3 25342 xlt2addrd 32963 xrge0addcld 32966 xrge0subcld 32967 xrofsup 32971 xrsmulgzz 33189 xrge0adddir 33198 xrge0adddi 33199 esumle 34357 esumlef 34361 omssubadd 34599 inelcarsg 34610 carsgclctunlem2 34618 carsgclctunlem3 34619 carsgclctun 34620 xle2addd 45917 infrpge 45932 xrlexaddrp 45933 infleinflem1 45950 infleinflem2 45951 limsupgtlem 46356 ismbl3 46565 ismbl4 46572 sge0prle 46980 sge0split 46988 sge0iunmptlemre 46994 sge0xaddlem1 47012 omeunle 47095 carageniuncl 47102 ovnsubaddlem1 47149 hspmbl 47208 ovolval5lem1 47231 |
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