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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 12523 | . . . 4 ⊢ ℕ0 ⊆ ℝ | |
| 2 | ressxr 11268 | . . . 4 ⊢ ℝ ⊆ ℝ* | |
| 3 | 1, 2 | sstri 3947 | . . 3 ⊢ ℕ0 ⊆ ℝ* |
| 4 | pnfxr 11278 | . . . 4 ⊢ +∞ ∈ ℝ* | |
| 5 | snssi 4753 | . . . 4 ⊢ (+∞ ∈ ℝ* → {+∞} ⊆ ℝ*) | |
| 6 | 4, 5 | ax-mp 5 | . . 3 ⊢ {+∞} ⊆ ℝ* |
| 7 | 3, 6 | unssi 4144 | . 2 ⊢ (ℕ0 ∪ {+∞}) ⊆ ℝ* |
| 8 | elex 3478 | . . 3 ⊢ (𝐴 ∈ 𝑉 → 𝐴 ∈ V) | |
| 9 | hashf 14392 | . . . 4 ⊢ ♯:V⟶(ℕ0 ∪ {+∞}) | |
| 10 | 9 | ffvelcdmi 7082 | . . 3 ⊢ (𝐴 ∈ V → (♯‘𝐴) ∈ (ℕ0 ∪ {+∞})) |
| 11 | 8, 10 | syl 18 | . 2 ⊢ (𝐴 ∈ 𝑉 → (♯‘𝐴) ∈ (ℕ0 ∪ {+∞})) |
| 12 | 7, 11 | sselid 3936 | 1 ⊢ (𝐴 ∈ 𝑉 → (♯‘𝐴) ∈ ℝ*) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2146 Vcvv 3457 ∪ cun 3904 ⊆ wss 3906 {csn 4591 ‘cfv 6540 ℝcr 11114 +∞cpnf 11255 ℝ*cxr 11257 ℕ0cn0 12519 ♯chash 14384 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7742 ax-cnex 11171 ax-resscn 11172 ax-1cn 11173 ax-icn 11174 ax-addcl 11175 ax-addrcl 11176 ax-mulcl 11177 ax-mulrcl 11178 ax-mulcom 11179 ax-addass 11180 ax-mulass 11181 ax-distr 11182 ax-i2m1 11183 ax-1ne0 11184 ax-1rid 11185 ax-rnegex 11186 ax-rrecex 11187 ax-cnre 11188 ax-pre-lttri 11189 ax-pre-lttrn 11190 ax-pre-ltadd 11191 ax-pre-mulgt0 11192 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-int 4915 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7376 df-ov 7422 df-oprab 7423 df-mpo 7424 df-om 7869 df-2nd 7993 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-rdg 8403 df-1o 8459 df-er 8700 df-en 8950 df-dom 8951 df-sdom 8952 df-fin 8953 df-card 9941 df-pnf 11260 df-mnf 11261 df-xr 11262 df-ltxr 11263 df-le 11264 df-sub 11458 df-neg 11459 df-nn 12249 df-n0 12520 df-xnn0 12593 df-z 12607 df-uz 12879 df-hash 14385 |
| This theorem is used by: nfile 14413 hashdom 14433 hashinfxadd 14439 hashunx 14440 hashgt0 14442 hashunsnggt 14448 hashle00 14454 hashgt0elex 14455 hashss 14463 hashpss 14464 hashgt12el 14477 hashgt12el2 14478 hashgt23el 14479 ramtlecl 17082 0ram 17102 isnzr2hash 20667 0ringnnzr 20673 lfuhgr2 29554 ewlkle 30013 upgrewlkle2 30014 hashxpe 33222 lbslelsp 34052 extdgfialglem1 34146 esumcst 34517 esumpinfval 34527 acycgr2v 35679 findcard4 38422 aks6d1c6lem2 42996 aks6d1c7lem2 43006 unitscyglem5 43024 idomodle 43976 hashnnltb 45790 |
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