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Mirrors > Home > MPE Home > Th. List > hashxrcl | Structured version Visualization version GIF version |
Description: Extended real closure of the ♯ function. (Contributed by Mario Carneiro, 22-Apr-2015.) |
Ref | Expression |
---|---|
hashxrcl | ⊢ (𝐴 ∈ 𝑉 → (♯‘𝐴) ∈ ℝ*) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nn0ssre 11622 | . . . 4 ⊢ ℕ0 ⊆ ℝ | |
2 | ressxr 10400 | . . . 4 ⊢ ℝ ⊆ ℝ* | |
3 | 1, 2 | sstri 3836 | . . 3 ⊢ ℕ0 ⊆ ℝ* |
4 | pnfxr 10410 | . . . 4 ⊢ +∞ ∈ ℝ* | |
5 | snssi 4557 | . . . 4 ⊢ (+∞ ∈ ℝ* → {+∞} ⊆ ℝ*) | |
6 | 4, 5 | ax-mp 5 | . . 3 ⊢ {+∞} ⊆ ℝ* |
7 | 3, 6 | unssi 4015 | . 2 ⊢ (ℕ0 ∪ {+∞}) ⊆ ℝ* |
8 | elex 3429 | . . 3 ⊢ (𝐴 ∈ 𝑉 → 𝐴 ∈ V) | |
9 | hashf 13418 | . . . 4 ⊢ ♯:V⟶(ℕ0 ∪ {+∞}) | |
10 | 9 | ffvelrni 6607 | . . 3 ⊢ (𝐴 ∈ V → (♯‘𝐴) ∈ (ℕ0 ∪ {+∞})) |
11 | 8, 10 | syl 17 | . 2 ⊢ (𝐴 ∈ 𝑉 → (♯‘𝐴) ∈ (ℕ0 ∪ {+∞})) |
12 | 7, 11 | sseldi 3825 | 1 ⊢ (𝐴 ∈ 𝑉 → (♯‘𝐴) ∈ ℝ*) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2166 Vcvv 3414 ∪ cun 3796 ⊆ wss 3798 {csn 4397 ‘cfv 6123 ℝcr 10251 +∞cpnf 10388 ℝ*cxr 10390 ℕ0cn0 11618 ♯chash 13410 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1896 ax-4 1910 ax-5 2011 ax-6 2077 ax-7 2114 ax-8 2168 ax-9 2175 ax-10 2194 ax-11 2209 ax-12 2222 ax-13 2391 ax-ext 2803 ax-sep 5005 ax-nul 5013 ax-pow 5065 ax-pr 5127 ax-un 7209 ax-cnex 10308 ax-resscn 10309 ax-1cn 10310 ax-icn 10311 ax-addcl 10312 ax-addrcl 10313 ax-mulcl 10314 ax-mulrcl 10315 ax-mulcom 10316 ax-addass 10317 ax-mulass 10318 ax-distr 10319 ax-i2m1 10320 ax-1ne0 10321 ax-1rid 10322 ax-rnegex 10323 ax-rrecex 10324 ax-cnre 10325 ax-pre-lttri 10326 ax-pre-lttrn 10327 ax-pre-ltadd 10328 ax-pre-mulgt0 10329 |
This theorem depends on definitions: df-bi 199 df-an 387 df-or 881 df-3or 1114 df-3an 1115 df-tru 1662 df-ex 1881 df-nf 1885 df-sb 2070 df-mo 2605 df-eu 2640 df-clab 2812 df-cleq 2818 df-clel 2821 df-nfc 2958 df-ne 3000 df-nel 3103 df-ral 3122 df-rex 3123 df-reu 3124 df-rab 3126 df-v 3416 df-sbc 3663 df-csb 3758 df-dif 3801 df-un 3803 df-in 3805 df-ss 3812 df-pss 3814 df-nul 4145 df-if 4307 df-pw 4380 df-sn 4398 df-pr 4400 df-tp 4402 df-op 4404 df-uni 4659 df-int 4698 df-iun 4742 df-br 4874 df-opab 4936 df-mpt 4953 df-tr 4976 df-id 5250 df-eprel 5255 df-po 5263 df-so 5264 df-fr 5301 df-we 5303 df-xp 5348 df-rel 5349 df-cnv 5350 df-co 5351 df-dm 5352 df-rn 5353 df-res 5354 df-ima 5355 df-pred 5920 df-ord 5966 df-on 5967 df-lim 5968 df-suc 5969 df-iota 6086 df-fun 6125 df-fn 6126 df-f 6127 df-f1 6128 df-fo 6129 df-f1o 6130 df-fv 6131 df-riota 6866 df-ov 6908 df-oprab 6909 df-mpt2 6910 df-om 7327 df-wrecs 7672 df-recs 7734 df-rdg 7772 df-er 8009 df-en 8223 df-dom 8224 df-sdom 8225 df-fin 8226 df-card 9078 df-pnf 10393 df-mnf 10394 df-xr 10395 df-ltxr 10396 df-le 10397 df-sub 10587 df-neg 10588 df-nn 11351 df-n0 11619 df-xnn0 11691 df-z 11705 df-uz 11969 df-hash 13411 |
This theorem is referenced by: nfile 13440 hashdom 13458 hashinfxadd 13464 hashunx 13465 hashgt0 13467 hashle00 13477 hashgt0elex 13478 hashss 13486 hashgt12el 13499 hashgt12el2 13500 ramtlecl 16075 0ram 16095 isnzr2hash 19625 0ringnnzr 19630 ewlkle 26903 upgrewlkle2 26904 esumcst 30670 esumpinfval 30680 idomodle 38617 |
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