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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 12650 | . . . 4 ⊢ ℕ0 ⊆ ℝ | |
| 2 | ressxr 11392 | . . . 4 ⊢ ℝ ⊆ ℝ* | |
| 3 | 1, 2 | sstri 3922 | . . 3 ⊢ ℕ0 ⊆ ℝ* |
| 4 | pnfxr 11402 | . . . 4 ⊢ +∞ ∈ ℝ* | |
| 5 | snssi 4748 | . . . 4 ⊢ (+∞ ∈ ℝ* → {+∞} ⊆ ℝ*) | |
| 6 | 4, 5 | ax-mp 5 | . . 3 ⊢ {+∞} ⊆ ℝ* |
| 7 | 3, 6 | unssi 4192 | . 2 ⊢ (ℕ0 ∪ {+∞}) ⊆ ℝ* |
| 8 | elex 3475 | . . 3 ⊢ (𝐴 ∈ 𝑉 → 𝐴 ∈ V) | |
| 9 | hashf 14523 | . . . 4 ⊢ ♯:V⟶(ℕ0 ∪ {+∞}) | |
| 10 | 9 | ffvelcdmi 7115 | . . 3 ⊢ (𝐴 ∈ V → (♯‘𝐴) ∈ (ℕ0 ∪ {+∞})) |
| 11 | 8, 10 | syl 18 | . 2 ⊢ (𝐴 ∈ 𝑉 → (♯‘𝐴) ∈ (ℕ0 ∪ {+∞})) |
| 12 | 7, 11 | sselid 3911 | 1 ⊢ (𝐴 ∈ 𝑉 → (♯‘𝐴) ∈ ℝ*) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2147 Vcvv 3454 ⊆ wss 3900 ∪ cun 4152 {csn 4588 ‘cfv 6566 ℝcr 11238 +∞cpnf 11379 ℝ*cxr 11381 ℕ0cn0 12646 ♯chash 14515 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-cnex 11295 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-int 4913 df-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-pred 6330 df-ord 6391 df-on 6392 df-lim 6393 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-om 7912 df-2nd 8036 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-1o 8514 df-er 8755 df-en 9012 df-dom 9013 df-sdom 9014 df-fin 9015 df-card 10057 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-nn 12376 df-n0 12647 df-xnn0 12720 df-z 12734 df-uz 13006 df-hash 14516 |
| This theorem is used by: nfile 14544 hashdom 14564 hashinfxadd 14570 hashunx 14571 hashgt0 14573 hashunsnggt 14579 hashle00 14585 hashgt0elex 14586 hashss 14594 hashpss 14595 hashgt12el 14608 hashgt12el2 14609 hashgt23el 14610 ramtlecl 17222 0ram 17242 isnzr2hash 20821 0ringnnzr 20827 lfuhgr2 29784 ewlkle 30243 upgrewlkle2 30244 hashxpe 33495 lbslelsp 34341 extdgfialglem1 34435 esumcst 34806 esumpinfval 34816 acycgr2v 36113 findcard4 38900 aks6d1c6lem2 43487 aks6d1c7lem2 43497 unitscyglem5 43515 idomodle 44454 hashnnltb 46277 |
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