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Mirrors > Home > MPE Home > Th. List > biantrud | Structured version Visualization version GIF version |
Description: A wff is equivalent to its conjunction with truth. (Contributed by NM, 2-Aug-1994.) (Proof shortened by Wolf Lammen, 23-Oct-2013.) |
Ref | Expression |
---|---|
biantrud.1 | ⊢ (𝜑 → 𝜓) |
Ref | Expression |
---|---|
biantrud | ⊢ (𝜑 → (𝜒 ↔ (𝜒 ∧ 𝜓))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | biantrud.1 | . 2 ⊢ (𝜑 → 𝜓) | |
2 | iba 523 | . 2 ⊢ (𝜓 → (𝜒 ↔ (𝜒 ∧ 𝜓))) | |
3 | 1, 2 | syl 17 | 1 ⊢ (𝜑 → (𝜒 ↔ (𝜒 ∧ 𝜓))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 ∧ wa 383 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem depends on definitions: df-bi 196 df-an 385 |
This theorem is referenced by: ifptru 1017 cad1 1546 raldifeq 4011 posn 5110 elrnmpt1 5295 fliftf 6465 eroveu 7729 ixpfi2 8147 funsnfsupp 8182 elfi2 8203 dffi3 8220 cfss 8970 wunex2 9439 nn2ge 10922 nnle1eq1 10925 nn0le0eq0 11198 ixxun 12062 ioopos 12121 injresinj 12451 hashle00 13049 prprrab 13112 xpcogend 13561 cnpart 13828 fz1f1o 14288 nndivdvds 14827 dvdsmultr2 14859 bitsmod 14996 sadadd 15027 sadass 15031 smuval2 15042 smumul 15053 pcmpt 15434 pcmpt2 15435 prmreclem2 15459 prmreclem5 15462 ramcl 15571 mrcidb2 16101 acsfn 16143 fncnvimaeqv 16583 latleeqj1 16886 pgpssslw 17852 subgdmdprd 18256 lssle0 18771 islpir2 19072 islinds3 19992 iscld4 20679 discld 20703 cncnpi 20892 cnprest2 20904 lmss 20912 iscon2 21027 dfcon2 21032 subislly 21094 lly1stc 21109 elptr 21186 txcn 21239 hauseqlcld 21259 xkoinjcn 21300 tsmsres 21757 isxmet2d 21942 xmetgt0 21973 prdsxmetlem 21983 imasdsf1olem 21988 xblss2 22017 stdbdbl 22132 prdsxmslem2 22144 xrtgioo 22417 xrsxmet 22420 cncffvrn 22509 cnmpt2pc 22535 elpi1i 22654 minveclem7 23014 elovolmr 23051 ismbf 23203 mbfmax 23222 itg1val2 23257 mbfi1fseqlem4 23291 itgresr 23351 iblrelem 23363 iblpos 23365 itgfsum 23399 rlimcnp 24492 rlimcnp2 24493 chpchtsum 24744 dchreq 24783 lgsneg 24846 lgsdilem 24849 lgsquadlem2 24906 2lgslem1a 24916 lmiinv 25484 isusgra0 25876 usgraop 25879 dfconngra1 26199 eupath2lem2 26505 frgra3vlem2 26528 numclwwlk2lem1 26629 minvecolem7 27123 shle0 27685 mdsl2bi 28566 dmdbr5ati 28665 cdj3lem1 28677 eulerpartlemr 29763 subfacp1lem3 30418 dfres3 30902 hfext 31460 bj-issetwt 32053 poimirlem25 32604 poimirlem26 32605 poimirlem27 32606 mblfinlem3 32618 mblfinlem4 32619 mbfresfi 32626 itg2addnclem 32631 itg2addnc 32634 cover2 32678 heiborlem10 32789 ople0 33492 atlle0 33610 cdlemg10c 34945 cdlemg33c 35014 hdmap14lem13 36190 mrefg3 36289 acsfn1p 36788 radcnvrat 37535 funressnfv 39857 dfdfat2 39860 2ffzoeq 40361 isspthonpth-av 40955 s3wwlks2on 41160 clwlkclwwlk 41211 clwwlksnun 41281 dfconngr1 41355 eupth2lem2 41387 frgr3vlem2 41444 av-numclwwlk2lem1 41532 |
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