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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 13206 | . 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 7390 ℝ*cxr 11214 +𝑒 cxad 13077 |
| 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 2702 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 ax-cnex 11131 ax-1cn 11133 ax-addrcl 11136 ax-rnegex 11146 ax-cnre 11148 |
| 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 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-ral 3046 df-rex 3055 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-iun 4960 df-br 5111 df-opab 5173 df-mpt 5192 df-id 5536 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-fv 6522 df-ov 7393 df-oprab 7394 df-mpo 7395 df-1st 7971 df-2nd 7972 df-pnf 11217 df-mnf 11218 df-xr 11219 df-xadd 13080 |
| This theorem is referenced by: xadd4d 13270 imasdsf1olem 24268 bldisj 24293 xblss2ps 24296 xblss2 24297 blcld 24400 comet 24408 stdbdxmet 24410 metdstri 24747 metdscnlem 24751 iscau3 25185 xlt2addrd 32689 xrge0addcld 32692 xrge0subcld 32693 xrofsup 32697 xrsmulgzz 32954 xrge0adddir 32966 xrge0adddi 32967 esumle 34055 esumlef 34059 omssubadd 34298 inelcarsg 34309 carsgclctunlem2 34317 carsgclctunlem3 34318 carsgclctun 34319 xle2addd 45339 infrpge 45354 xrlexaddrp 45355 infleinflem1 45373 infleinflem2 45374 limsupgtlem 45782 ismbl3 45991 ismbl4 45998 sge0prle 46406 sge0split 46414 sge0iunmptlemre 46420 sge0xaddlem1 46438 omeunle 46521 carageniuncl 46528 ovnsubaddlem1 46575 hspmbl 46634 ovolval5lem1 46657 |
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