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| Description: Associative law for conjunction. Theorem *4.32 of [WhiteheadRussell] p. 118. |
| Ref | Expression |
|---|---|
| anass |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | impexp 347 |
. . . 4
| |
| 2 | imnan 242 |
. . . . 5
| |
| 3 | 2 | imbi2i 185 |
. . . 4
|
| 4 | 1, 3 | bitr 173 |
. . 3
|
| 5 | 4 | negbii 187 |
. 2
|
| 6 | df-an 225 |
. 2
| |
| 7 | df-an 225 |
. 2
| |
| 8 | 5, 6, 7 | 3bitr4 183 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: an12 484 an23 485 an4 506 prlem2 771 3anass 779 4exdistr 1313 2sb5 1335 2sb5rf 1338 sbel2x 1345 euan 1428 r2ex 1691 r19.41v 1763 reeanv 1778 ceqsex2 1836 gencbvex 1838 ceqsrex2v 1890 inass 2223 difrab 2273 axsep2 2704 eqvinop 2791 copsexg 2792 opabid 2810 uniuni 2880 reuxfr2 2903 wefrc 2943 onminex 3020 elxp2 3203 resopab2 3398 asymref 3439 elxp4 3453 elxp5 3454 ssrnres 3481 cores 3499 coass 3512 imadif 3574 fcoi1 3645 imaiun 3864 isoini 3900 f1oiso 3904 dfrdg2 3933 dfoprab2 3991 fnoprval 4017 oprabex3 4022 oprabval3 4030 dfoprab5 4115 foprab2 4119 mapsnen 4429 xpsnen 4435 xpassen 4441 abfii2OLD 4562 zfregs 4647 bnd2 4724 aceq1 4729 aceq5lem1 4735 aceq5lem2 4736 aceq5lem5 4739 kmlem3 4767 kmlem14 4778 ltexpi 5029 genpass 5112 distrlem1pr 5127 distrlem5pr 5131 ltexprlem4 5145 reclem2pr 5157 elreal 5250 axaddopr 5265 axmulopr 5266 infm3 6054 infmsup 6068 zmin 6219 qbtwnre 6278 elioo3g 6380 rexuz 6444 rexuz2 6445 nnwos 6460 elfz2t 6472 elfzlem 6473 sumex 6981 elcncf1d 7270 abscncflem 7274 infpn2 7509 infmap2lem1 7579 istps2 7607 istps3 7608 tgss3t 7638 cncnplem4 7777 blfval2 7836 blrn2 7842 opnin 7869 cncfmet 7905 bcthlem14 8012 grpidinvlem3 8050 pilem1 8671 h2hlm 8850 sh2 9091 ocsh 9156 osumlem5 9582 nmcopexlem1 9951 nmcfnexlem1 9980 cvbr2t 10210 cvnbtwn2t 10214 mdsl2 10249 cvmd 10251 mdsymlem2 10331 sumdmdi 10342 hmeogrp 10538 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 |
| This theorem depends on definitions: df-bi 147 df-an 225 |