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Mirrors > Home > MPE Home > Th. List > s1len | Structured version Visualization version GIF version |
Description: Length of a singleton word. (Contributed by Stefan O'Rear, 15-Aug-2015.) (Revised by Mario Carneiro, 26-Feb-2016.) |
Ref | Expression |
---|---|
s1len | ⊢ (♯‘〈“𝐴”〉) = 1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-s1 14582 | . . 3 ⊢ 〈“𝐴”〉 = {〈0, ( I ‘𝐴)〉} | |
2 | 1 | fveq2i 6899 | . 2 ⊢ (♯‘〈“𝐴”〉) = (♯‘{〈0, ( I ‘𝐴)〉}) |
3 | opex 5466 | . . 3 ⊢ 〈0, ( I ‘𝐴)〉 ∈ V | |
4 | hashsng 14364 | . . 3 ⊢ (〈0, ( I ‘𝐴)〉 ∈ V → (♯‘{〈0, ( I ‘𝐴)〉}) = 1) | |
5 | 3, 4 | ax-mp 5 | . 2 ⊢ (♯‘{〈0, ( I ‘𝐴)〉}) = 1 |
6 | 2, 5 | eqtri 2753 | 1 ⊢ (♯‘〈“𝐴”〉) = 1 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1533 ∈ wcel 2098 Vcvv 3461 {csn 4630 〈cop 4636 I cid 5575 ‘cfv 6549 0cc0 11140 1c1 11141 ♯chash 14325 〈“cs1 14581 |
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 2166 ax-ext 2696 ax-sep 5300 ax-nul 5307 ax-pow 5365 ax-pr 5429 ax-un 7741 ax-cnex 11196 ax-resscn 11197 ax-1cn 11198 ax-icn 11199 ax-addcl 11200 ax-addrcl 11201 ax-mulcl 11202 ax-mulrcl 11203 ax-mulcom 11204 ax-addass 11205 ax-mulass 11206 ax-distr 11207 ax-i2m1 11208 ax-1ne0 11209 ax-1rid 11210 ax-rnegex 11211 ax-rrecex 11212 ax-cnre 11213 ax-pre-lttri 11214 ax-pre-lttrn 11215 ax-pre-ltadd 11216 ax-pre-mulgt0 11217 |
This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 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 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2930 df-nel 3036 df-ral 3051 df-rex 3060 df-reu 3364 df-rab 3419 df-v 3463 df-sbc 3774 df-csb 3890 df-dif 3947 df-un 3949 df-in 3951 df-ss 3961 df-pss 3964 df-nul 4323 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-op 4637 df-uni 4910 df-int 4951 df-iun 4999 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5633 df-we 5635 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-pred 6307 df-ord 6374 df-on 6375 df-lim 6376 df-suc 6377 df-iota 6501 df-fun 6551 df-fn 6552 df-f 6553 df-f1 6554 df-fo 6555 df-f1o 6556 df-fv 6557 df-riota 7375 df-ov 7422 df-oprab 7423 df-mpo 7424 df-om 7872 df-1st 7994 df-2nd 7995 df-frecs 8287 df-wrecs 8318 df-recs 8392 df-rdg 8431 df-1o 8487 df-er 8725 df-en 8965 df-dom 8966 df-sdom 8967 df-fin 8968 df-card 9964 df-pnf 11282 df-mnf 11283 df-xr 11284 df-ltxr 11285 df-le 11286 df-sub 11478 df-neg 11479 df-nn 12246 df-n0 12506 df-z 12592 df-uz 12856 df-fz 13520 df-hash 14326 df-s1 14582 |
This theorem is referenced by: s1dm 14594 lsws1 14597 eqs1 14598 wrdl1s1 14600 ccats1alpha 14605 ccatws1len 14606 ccat2s1len 14609 ccats1val2 14613 ccat2s1p1 14615 ccat2s1p2 14616 cats1un 14707 revs1 14751 cats1fvn 14845 cats1len 14847 s2fv0 14874 s2fv1 14875 s2len 14876 s2prop 14894 s2eq2s1eq 14923 ofs2 14954 psgnpmtr 19477 efgsval2 19700 efgs1 19702 efgsp1 19704 efgsfo 19706 efgredlemc 19712 pgpfaclem1 20050 wwlksnext 29776 wwlksnextbi 29777 clwlkclwwlk2 29885 loopclwwlkn1b 29924 clwwlkn1loopb 29925 clwwlkel 29928 clwwlkwwlksb 29936 clwwlknon1 29979 1ewlk 29997 1pthdlem1 30017 1pthdlem2 30018 1wlkdlem1 30019 1wlkdlem4 30022 1pthond 30026 lp1cycl 30034 ccatws1f1o 32761 cycpmco2lem2 32940 cycpmco2lem5 32943 cycpmco2lem6 32944 1arithidomlem2 33348 signstf0 34331 signstfvn 34332 signstfvp 34334 signsvf1 34344 signsvfn 34345 signshf 34351 loop1cycl 34878 upwordsing 46408 |
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