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Mirrors > Home > MPE Home > Th. List > hashnn0pnf | Structured version Visualization version GIF version |
Description: The value of the hash function for a set is either a nonnegative integer or positive infinity. TODO-AV: mark as OBSOLETE and replace it by hashxnn0 14304? (Contributed by Alexander van der Vekens, 6-Dec-2017.) |
Ref | Expression |
---|---|
hashnn0pnf | ⢠(š ā š ā ((āÆāš) ā ā0 ⨠(āÆāš) = +ā)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | hashf 14303 | . . . 4 ⢠āÆ:Vā¶(ā0 āŖ {+ā}) | |
2 | 1 | a1i 11 | . . 3 ⢠(š ā š ā āÆ:Vā¶(ā0 āŖ {+ā})) |
3 | elex 3487 | . . 3 ⢠(š ā š ā š ā V) | |
4 | 2, 3 | ffvelcdmd 7081 | . 2 ⢠(š ā š ā (āÆāš) ā (ā0 āŖ {+ā})) |
5 | elun 4143 | . . 3 ⢠((āÆāš) ā (ā0 āŖ {+ā}) ā ((āÆāš) ā ā0 ⨠(āÆāš) ā {+ā})) | |
6 | elsni 4640 | . . . 4 ⢠((āÆāš) ā {+ā} ā (āÆāš) = +ā) | |
7 | 6 | orim2i 907 | . . 3 ⢠(((āÆāš) ā ā0 ⨠(āÆāš) ā {+ā}) ā ((āÆāš) ā ā0 ⨠(āÆāš) = +ā)) |
8 | 5, 7 | sylbi 216 | . 2 ⢠((āÆāš) ā (ā0 āŖ {+ā}) ā ((āÆāš) ā ā0 ⨠(āÆāš) = +ā)) |
9 | 4, 8 | syl 17 | 1 ⢠(š ā š ā ((āÆāš) ā ā0 ⨠(āÆāš) = +ā)) |
Colors of variables: wff setvar class |
Syntax hints: ā wi 4 ⨠wo 844 = wceq 1533 ā wcel 2098 Vcvv 3468 āŖ cun 3941 {csn 4623 ā¶wf 6533 ācfv 6537 +ācpnf 11249 ā0cn0 12476 āÆchash 14295 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2697 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7722 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-nel 3041 df-ral 3056 df-rex 3065 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-pss 3962 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-op 4630 df-uni 4903 df-int 4944 df-iun 4992 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6294 df-ord 6361 df-on 6362 df-lim 6363 df-suc 6364 df-iota 6489 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7853 df-2nd 7975 df-frecs 8267 df-wrecs 8298 df-recs 8372 df-rdg 8411 df-1o 8467 df-er 8705 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-card 9936 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-nn 12217 df-n0 12477 df-xnn0 12549 df-z 12563 df-uz 12827 df-hash 14296 |
This theorem is referenced by: hashnnn0genn0 14308 hashnemnf 14309 hashv01gt1 14310 hashneq0 14329 hashinfxadd 14350 hashge2el2difr 14448 tgldimor 28261 |
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