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Mirrors > Home > ILE Home > Th. List > eleq2s | GIF version |
Description: Substitution of equal classes into a membership antecedent. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) |
Ref | Expression |
---|---|
eleq2s.1 | ⊢ (𝐴 ∈ 𝐵 → 𝜑) |
eleq2s.2 | ⊢ 𝐶 = 𝐵 |
Ref | Expression |
---|---|
eleq2s | ⊢ (𝐴 ∈ 𝐶 → 𝜑) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eleq2s.2 | . . 3 ⊢ 𝐶 = 𝐵 | |
2 | 1 | eleq2i 2206 | . 2 ⊢ (𝐴 ∈ 𝐶 ↔ 𝐴 ∈ 𝐵) |
3 | eleq2s.1 | . 2 ⊢ (𝐴 ∈ 𝐵 → 𝜑) | |
4 | 2, 3 | sylbi 120 | 1 ⊢ (𝐴 ∈ 𝐶 → 𝜑) |
Colors of variables: wff set class |
Syntax hints: → wi 4 = wceq 1331 ∈ wcel 1480 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1423 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-4 1487 ax-17 1506 ax-ial 1514 ax-ext 2121 |
This theorem depends on definitions: df-bi 116 df-cleq 2132 df-clel 2135 |
This theorem is referenced by: elrabi 2837 opelopabsb 4182 epelg 4212 reg3exmidlemwe 4493 elxpi 4555 optocl 4615 fvmptss2 5496 fvmptssdm 5505 acexmidlemcase 5769 elmpocl 5968 mpoxopn0yelv 6136 tfr2a 6218 tfri1dALT 6248 2oconcl 6336 ecexr 6434 ectocld 6495 ecoptocl 6516 eroveu 6520 mapsnconst 6588 diffitest 6781 en2eqpr 6801 ctssdccl 6996 exmidonfinlem 7049 exmidfodomrlemr 7058 exmidfodomrlemrALT 7059 dmaddpqlem 7185 nqpi 7186 nq0nn 7250 0nsr 7557 suplocsrlempr 7615 cnm 7640 axaddcl 7672 axmulcl 7674 aprcl 8408 peano2uzs 9379 fzssnn 9848 fzossnn0 9952 rebtwn2zlemstep 10030 fldiv4p1lem1div2 10078 frecfzennn 10199 fser0const 10289 facnn 10473 bcpasc 10512 hashfzo0 10569 rexuz3 10762 rexanuz2 10763 r19.2uz 10765 cau4 10888 caubnd2 10889 climshft2 11075 climaddc1 11098 climmulc2 11100 climsubc1 11101 climsubc2 11102 climlec2 11110 climcau 11116 climcaucn 11120 iserabs 11244 binomlem 11252 isumshft 11259 cvgratgt0 11302 clim2divap 11309 ntrivcvgap 11317 infssuzex 11642 infssuzledc 11643 3prm 11809 phicl2 11890 phibndlem 11892 dfphi2 11896 crth 11900 phimullem 11901 znnen 11911 ennnfonelemkh 11925 bj-el2oss1o 12981 el2oss1o 13188 nninfalllem1 13203 nninfall 13204 isomninnlem 13225 |
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