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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 585 | 1 ⊢ (𝜑 → (𝐴 +𝑒 𝐵) ∈ ℝ*) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2114 (class class class)co 7362 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 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5232 ax-nul 5242 ax-pow 5304 ax-pr 5372 ax-un 7684 ax-cnex 11089 ax-1cn 11091 ax-addrcl 11094 ax-rnegex 11104 ax-cnre 11106 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5521 df-xp 5632 df-rel 5633 df-cnv 5634 df-co 5635 df-dm 5636 df-rn 5637 df-res 5638 df-ima 5639 df-iota 6450 df-fun 6496 df-fn 6497 df-f 6498 df-fv 6502 df-ov 7365 df-oprab 7366 df-mpo 7367 df-1st 7937 df-2nd 7938 df-pnf 11176 df-mnf 11177 df-xr 11178 df-xadd 13059 |
| This theorem is referenced by: xadd4d 13250 imasdsf1olem 24352 bldisj 24377 xblss2ps 24380 xblss2 24381 blcld 24484 comet 24492 stdbdxmet 24494 metdstri 24831 metdscnlem 24835 iscau3 25259 xlt2addrd 32851 xrge0addcld 32854 xrge0subcld 32855 xrofsup 32859 xrsmulgzz 33088 xrge0adddir 33097 xrge0adddi 33098 esumle 34222 esumlef 34226 omssubadd 34464 inelcarsg 34475 carsgclctunlem2 34483 carsgclctunlem3 34484 carsgclctun 34485 xle2addd 45790 infrpge 45805 xrlexaddrp 45806 infleinflem1 45823 infleinflem2 45824 limsupgtlem 46229 ismbl3 46438 ismbl4 46445 sge0prle 46853 sge0split 46861 sge0iunmptlemre 46867 sge0xaddlem1 46885 omeunle 46968 carageniuncl 46975 ovnsubaddlem1 47022 hspmbl 47081 ovolval5lem1 47104 |
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