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| Mirrors > Home > ILE Home > Th. List > eqeltrdi | GIF version | ||
| Description: A membership and equality inference. (Contributed by NM, 4-Jan-2006.) |
| Ref | Expression |
|---|---|
| eqeltrdi.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| eqeltrdi.2 | ⊢ 𝐵 ∈ 𝐶 |
| Ref | Expression |
|---|---|
| eqeltrdi | ⊢ (𝜑 → 𝐴 ∈ 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqeltrdi.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | eqeltrdi.2 | . . 3 ⊢ 𝐵 ∈ 𝐶 | |
| 3 | 2 | a1i 9 | . 2 ⊢ (𝜑 → 𝐵 ∈ 𝐶) |
| 4 | 1, 3 | eqeltrd 2315 | 1 ⊢ (𝜑 → 𝐴 ∈ 𝐶) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 ∈ wcel 2209 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-4 1563 ax-17 1579 ax-ial 1587 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-cleq 2231 df-clel 2234 |
| This theorem is used by: eqeltrrdi 2330 snexprc 4325 onsucelsucexmidlem 4678 dcextest 4730 nnpredcl 4772 ovprc 6124 nnmcl 6759 xpsnen 7125 pw1fin 7223 xpfi 7245 mapfi 7267 snexxph 7274 ctssdclemn0 7456 nninfisollemne 7477 nninfisol 7479 exmidonfinlem 7551 pw1on 7591 indpi 7715 nq0m0r 7829 genpelxp 7884 un0mulcl 9608 znegcl 9684 zeo 9761 eqreznegel 10029 xnegcl 10250 modqid0 10807 q2txmodxeq0 10841 ser0 10990 expcllem 11007 m1expcl2 11018 nn0ltexp2 11168 bcval 11208 bccl 11226 hashinfom 11238 lswex 11377 pfxclz 11472 pfxwrdsymbg 11483 cats1un 11514 cats1fvn 11557 cats1fvnd 11558 resqrexlemlo 11800 iserge0 12133 sumrbdclem 12168 fsum3cvg 12169 summodclem3 12171 summodclem2a 12172 fisumss 12183 binom 12275 bcxmas 12280 prodf1 12333 prodrbdclem 12362 fproddccvg 12363 prodmodclem2a 12367 fprodntrivap 12375 prodssdc 12380 fprodssdc 12381 gcdval 12760 gcdcl 12767 lcmcl 12874 pcxnn0cl 13117 pcxcl 13118 pcmptcl 13149 infpnlem2 13167 zgz 13180 4sqlem19 13216 ballotfilemrval 13318 gsum2d2fi 14273 znf1o 15094 ssblps 15668 ssbl 15669 xmeter 15679 blssioo 15796 elply 15977 plycj 16004 1sgmprm 16305 lgslem4 16344 lgsne0 16379 2sqlem9 16465 2sqlem10 16466 uhgr0enedgfi 16699 vtxdgfi0e 16758 eulerpathprum 16943 bj-charfun 17055 012of 17245 2o01f 17246 idjudju 17269 nninfsellemeqinf 17282 nninffeq 17286 trilpolemclim 17309 iswomni0 17325 |
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