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Related theorems GIF version |
| Description: Deduction form of bitr4 154. |
| Ref | Expression |
|---|---|
| bitr4d.1 | ⊢ (φ → (ψ ↔ χ)) |
| bitr4d.2 | ⊢ (φ → (θ ↔ χ)) |
| Ref | Expression |
|---|---|
| bitr4d | ⊢ (φ → (ψ ↔ θ)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bitr4d.1 | . 2 ⊢ (φ → (ψ ↔ χ)) | |
| 2 | bitr4d.2 | . . 3 ⊢ (φ → (θ ↔ χ)) | |
| 3 | 2 | bicomd 399 | . 2 ⊢ (φ → (χ ↔ θ)) |
| 4 | 1, 3 | bitrd 406 | 1 ⊢ (φ → (ψ ↔ θ)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ↔ wb 127 |
| This theorem is referenced by: 3bitr4d 424 ceqsrexv 1413 sbc19.21g 1470 reuhyp 1581 ordtri4 2235 ordsssuc 2310 opbrop 2472 dmsnop 2547 iss 2599 fnopabfv 2858 dmfco 2864 fvco 2865 f1fv 2916 isoini 2938 oprabval 3047 caoprord3 3072 oe1m 3147 oawordri 3152 oalimcl 3162 brecop 3242 ecopoprsym 3246 xpdom2 3345 mapxpen 3390 r1pw 3529 r1pwcl 3530 cardnn 3631 ltsopq 3869 ltapq 3870 ltmpq 3871 ltexpq2 3875 genpass 3906 ltprord 3928 prlem936a 3947 ltsosr 3997 ltasr 4003 divneq0bt 4230 leltt 4278 letri3t 4283 lesub1t 4352 ltsubadd2t 4354 lesubadd2t 4356 ltsub23t 4359 ltsubpost 4364 lerec 4411 nnltp1let 4449 nn0ltp1let 4556 nn0leltp1t 4557 zleltp1t 4598 qbtwnre 4650 om2uzlt 4654 le2sqet 4707 replimt 4798 clim2 4881 xpnnen 4927 znnen 4930 normgt0t 5078 hlim2 5112 shselt 5280 cmbrt 5494 pjnormss 5638 pjelt 5668 jplem1 5701 cvbrt 5714 mdbr 5726 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 |
| This theorem depends on definitions: df-bi 128 df-an 198 |