Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > bicomd | GIF version |
Description: Commute two sides of a biconditional in a deduction. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
bicomd.1 | ⊢ (𝜑 → (𝜓 ↔ 𝜒)) |
Ref | Expression |
---|---|
bicomd | ⊢ (𝜑 → (𝜒 ↔ 𝜓)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bicomd.1 | . 2 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
2 | bicom 138 | . 2 ⊢ ((𝜓 ↔ 𝜒) ↔ (𝜒 ↔ 𝜓)) | |
3 | 1, 2 | sylib 120 | 1 ⊢ (𝜑 → (𝜒 ↔ 𝜓)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ↔ wb 103 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 |
This theorem depends on definitions: df-bi 115 |
This theorem is referenced by: impbid2 141 syl5ibr 154 ibir 175 bitr2d 187 bitr3d 188 bitr4d 189 syl5rbb 191 syl6rbb 195 pm5.5 240 anabs5 537 con2bidc 802 con1biidc 804 con2biidc 806 pm4.63dc 813 pm4.64dc 834 pm5.55dc 852 baibr 862 baibd 865 rbaibd 866 pm4.55dc 879 anordc 897 pm5.75 903 ninba 913 xor3dc 1318 3impexpbicomi 1368 cbvexh 1678 sbequ12r 1695 sbco 1883 sbcomxyyz 1887 sbal1yz 1918 cbvab 2201 nnedc 2250 necon3bbid 2285 necon2abiidc 2309 necon2bbii 2310 gencbvex 2645 gencbval 2647 sbhypf 2648 clel3g 2729 reu8 2788 sbceq2a 2825 sbcco2 2837 sbcsng 3451 opabid 4012 soeq2 4071 tfisi 4328 posng 4430 xpiindim 4491 fvopab6 5285 fconstfvm 5400 cbvfo 5445 cbvexfo 5446 f1eqcocnv 5451 isoid 5470 isoini 5477 resoprab2 5618 dfoprab3 5837 cnvoprab 5875 nnacan 6108 nnmcan 6115 isotilem 6419 eqinfti 6433 inflbti 6437 infglbti 6438 dfmpq2 6545 div4p1lem1div2 8284 ztri3or 8394 nn0ind-raph 8464 zindd 8465 qreccl 8727 iooshf 8975 fzofzim 9197 elfzomelpfzo 9240 zmodid2 9354 q2submod 9387 modfzo0difsn 9397 frec2uzltd 9405 iiserex 10177 absdvdsb 10213 dvdsabsb 10214 modmulconst 10227 dvdsadd 10238 dvdsabseq 10247 odd2np1 10272 mod2eq0even 10277 oddnn02np1 10280 oddge22np1 10281 evennn02n 10282 evennn2n 10283 zeo5 10288 gcdass 10404 lcmdvds 10461 lcmass 10467 divgcdcoprm0 10483 divgcdcoprmex 10484 1nprm 10496 dvdsnprmd 10507 isevengcd2 10537 bj-indeq 10724 |
Copyright terms: Public domain | W3C validator |