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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 13175 | . 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 +𝑒 𝐵) ∈ ℝ*) | |
| 4 | 1, 2, 3 | syl2anc 584 | 1 ⊢ (𝜑 → (𝐴 +𝑒 𝐵) ∈ ℝ*) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2109 (class class class)co 7369 ℝ*cxr 11183 +𝑒 cxad 13046 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5246 ax-nul 5256 ax-pow 5315 ax-pr 5382 ax-un 7691 ax-cnex 11100 ax-1cn 11102 ax-addrcl 11105 ax-rnegex 11115 ax-cnre 11117 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-rab 3403 df-v 3446 df-sbc 3751 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-id 5526 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-fv 6507 df-ov 7372 df-oprab 7373 df-mpo 7374 df-1st 7947 df-2nd 7948 df-pnf 11186 df-mnf 11187 df-xr 11188 df-xadd 13049 |
| This theorem is referenced by: xadd4d 13239 imasdsf1olem 24294 bldisj 24319 xblss2ps 24322 xblss2 24323 blcld 24426 comet 24434 stdbdxmet 24436 metdstri 24773 metdscnlem 24777 iscau3 25211 xlt2addrd 32732 xrge0addcld 32735 xrge0subcld 32736 xrofsup 32740 xrsmulgzz 32993 xrge0adddir 33002 xrge0adddi 33003 esumle 34041 esumlef 34045 omssubadd 34284 inelcarsg 34295 carsgclctunlem2 34303 carsgclctunlem3 34304 carsgclctun 34305 xle2addd 45325 infrpge 45340 xrlexaddrp 45341 infleinflem1 45359 infleinflem2 45360 limsupgtlem 45768 ismbl3 45977 ismbl4 45984 sge0prle 46392 sge0split 46400 sge0iunmptlemre 46406 sge0xaddlem1 46424 omeunle 46507 carageniuncl 46514 ovnsubaddlem1 46561 hspmbl 46620 ovolval5lem1 46643 |
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