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| Mirrors > Home > MPE Home > Th. List > xaddcl | Structured version Visualization version GIF version | ||
| Description: The extended real addition operation is closed in extended reals. (Contributed by Mario Carneiro, 20-Aug-2015.) |
| Ref | Expression |
|---|---|
| xaddcl | ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 +𝑒 𝐵) ∈ ℝ*) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xaddf 13140 | . 2 ⊢ +𝑒 :(ℝ* × ℝ*)⟶ℝ* | |
| 2 | 1 | fovcl 7486 | 1 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 +𝑒 𝐵) ∈ ℝ*) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∈ wcel 2114 (class class class)co 7358 ℝ*cxr 11166 +𝑒 cxad 13025 |
| 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 5231 ax-nul 5241 ax-pow 5300 ax-pr 5368 ax-un 7680 ax-cnex 11083 ax-1cn 11085 ax-addrcl 11088 ax-rnegex 11098 ax-cnre 11100 |
| 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 5517 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-fv 6498 df-ov 7361 df-oprab 7362 df-mpo 7363 df-1st 7933 df-2nd 7934 df-pnf 11169 df-mnf 11170 df-xr 11171 df-xadd 13028 |
| This theorem is referenced by: xaddass 13165 xaddass2 13166 xleadd1a 13169 xleadd1 13171 xltadd1 13172 xaddge0 13174 xle2add 13175 xlt2add 13176 xsubge0 13177 xposdif 13178 xlesubadd 13179 xadddi 13211 xadddir 13212 xadddi2 13213 xadddi2r 13214 xaddcld 13217 ge0xaddcl 13379 xrsmgm 21363 xrsds 21366 xrs1mnd 21397 xrsxmet 24753 xrofsup 32830 supxrgelem 45770 caragenel2d 46964 |
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