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| Mirrors > Home > ILE Home > Th. List > mp2b | GIF version | ||
| Description: A double modus ponens inference. (Contributed by Mario Carneiro, 24-Jan-2013.) |
| Ref | Expression |
|---|---|
| mp2b.1 | ⊢ 𝜑 |
| mp2b.2 | ⊢ (𝜑 → 𝜓) |
| mp2b.3 | ⊢ (𝜓 → 𝜒) |
| Ref | Expression |
|---|---|
| mp2b | ⊢ 𝜒 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mp2b.1 | . . 3 ⊢ 𝜑 | |
| 2 | mp2b.2 | . . 3 ⊢ (𝜑 → 𝜓) | |
| 3 | 1, 2 | ax-mp 5 | . 2 ⊢ 𝜓 |
| 4 | mp2b.3 | . 2 ⊢ (𝜓 → 𝜒) | |
| 5 | 3, 4 | ax-mp 5 | 1 ⊢ 𝜒 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 |
| This proof depends on axioms: ax-mp 5 |
| This theorem is used by: eqvinc 2949 2ordpr 4673 regexmid 4684 ordsoexmid 4711 reg3exmid 4729 intasym 5175 relcoi1 5322 funres11 5456 cnvresid 5458 mpofvex 6445 df1st2 6459 df2nd2 6460 dftpos4 6538 tposf12 6544 frecabcl 6674 xp01disjl 6711 xpcomco 7129 1ndom2 7171 ominf 7205 sbthlem2 7281 djuunr 7413 eldju 7415 ctssdccl 7458 ctssdclemr 7459 omct 7464 ctssexmid 7497 rec1nq 7769 halfnqq 7784 caucvgsrlemasr 8164 axresscn 8234 0re 8333 gtso 8411 cnegexlem2 8510 uzn0 9955 indstr 10010 dfioo2 10394 fnn0nninf 10897 hashinfuni 11239 hashp1i 11274 cnrecnv 11699 rexanuz 11777 xrmaxiflemcom 12041 climdm 12087 sumsnf 12202 tanvalap 12501 egt2lt3 12573 lcmgcdlem 12881 3prm 12932 oddpwdc 12980 sqpweven 12981 2sqpwodd 12982 qnumval 12991 qdenval 12992 modxai 13225 xpnnen 13344 ennnfonelemhdmp1 13359 ennnfonelemss 13360 ennnfonelemnn0 13372 qnnen 13381 ctiunctal 13391 unct 13392 structcnvcnv 13427 setsslid 13462 prdsvallem 13681 xpsfrn 13731 xpsff1o2 13732 gsum2dfilem2 14273 prdsval 14281 ringn0 14473 rmodislmodlem 14797 cnfldstr 15005 cnfldadd 15009 cnfldmul 15011 cnfldsub 15022 cnsubmlem 15025 cnsubglem 15026 zring0 15045 tgrest 15407 lmbr2 15452 cnptoprest 15477 lmff 15487 tx1cn 15507 tx2cn 15508 cnblcld 15773 cnfldms 15774 cnfldtopn 15777 tgioo 15792 reeff1o 16011 pilem1 16018 efhalfpi 16038 coseq0negpitopi 16075 ppiqltx 16293 bposlem6 16328 bposlem8 16330 konigsberglem2 16947 konigsberglem5 16950 pw1ninf 17238 012of 17240 pw1nct 17250 rabid1o 17251 stnot 17256 nnnninfen 17282 iswomninnlem 17318 |
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