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Mirrors > Home > MPE Home > Th. List > ndxidOLD | Structured version Visualization version GIF version |
Description: Obsolete proof of ndxid 16085 as of 28-Dec-2021. (Contributed by NM, 19-Oct-2012.) (Revised by Mario Carneiro, 6-Oct-2013.) (Proof modification is discouraged.) (New usage is discouraged.) |
Ref | Expression |
---|---|
ndxarg.1 | ⊢ 𝐸 = Slot 𝑁 |
ndxarg.2 | ⊢ 𝑁 ∈ ℕ |
Ref | Expression |
---|---|
ndxidOLD | ⊢ 𝐸 = Slot (𝐸‘ndx) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ndxarg.1 | . 2 ⊢ 𝐸 = Slot 𝑁 | |
2 | df-slot 16063 | . . 3 ⊢ Slot (𝐸‘ndx) = (𝑥 ∈ V ↦ (𝑥‘(𝐸‘ndx))) | |
3 | df-slot 16063 | . . . 4 ⊢ Slot 𝑁 = (𝑥 ∈ V ↦ (𝑥‘𝑁)) | |
4 | ndxarg.2 | . . . . . . 7 ⊢ 𝑁 ∈ ℕ | |
5 | 1, 4 | ndxarg 16084 | . . . . . 6 ⊢ (𝐸‘ndx) = 𝑁 |
6 | 5 | fveq2i 6355 | . . . . 5 ⊢ (𝑥‘(𝐸‘ndx)) = (𝑥‘𝑁) |
7 | 6 | mpteq2i 4893 | . . . 4 ⊢ (𝑥 ∈ V ↦ (𝑥‘(𝐸‘ndx))) = (𝑥 ∈ V ↦ (𝑥‘𝑁)) |
8 | 3, 7 | eqtr4i 2785 | . . 3 ⊢ Slot 𝑁 = (𝑥 ∈ V ↦ (𝑥‘(𝐸‘ndx))) |
9 | 2, 8 | eqtr4i 2785 | . 2 ⊢ Slot (𝐸‘ndx) = Slot 𝑁 |
10 | 1, 9 | eqtr4i 2785 | 1 ⊢ 𝐸 = Slot (𝐸‘ndx) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1632 ∈ wcel 2139 Vcvv 3340 ↦ cmpt 4881 ‘cfv 6049 ℕcn 11212 ndxcnx 16056 Slot cslot 16058 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1871 ax-4 1886 ax-5 1988 ax-6 2054 ax-7 2090 ax-8 2141 ax-9 2148 ax-10 2168 ax-11 2183 ax-12 2196 ax-13 2391 ax-ext 2740 ax-sep 4933 ax-nul 4941 ax-pow 4992 ax-pr 5055 ax-un 7114 ax-cnex 10184 ax-resscn 10185 ax-1cn 10186 ax-icn 10187 ax-addcl 10188 ax-addrcl 10189 ax-mulcl 10190 ax-mulrcl 10191 ax-i2m1 10196 ax-1ne0 10197 ax-rrecex 10200 ax-cnre 10201 |
This theorem depends on definitions: df-bi 197 df-or 384 df-an 385 df-3or 1073 df-3an 1074 df-tru 1635 df-ex 1854 df-nf 1859 df-sb 2047 df-eu 2611 df-mo 2612 df-clab 2747 df-cleq 2753 df-clel 2756 df-nfc 2891 df-ne 2933 df-ral 3055 df-rex 3056 df-reu 3057 df-rab 3059 df-v 3342 df-sbc 3577 df-csb 3675 df-dif 3718 df-un 3720 df-in 3722 df-ss 3729 df-pss 3731 df-nul 4059 df-if 4231 df-pw 4304 df-sn 4322 df-pr 4324 df-tp 4326 df-op 4328 df-uni 4589 df-iun 4674 df-br 4805 df-opab 4865 df-mpt 4882 df-tr 4905 df-id 5174 df-eprel 5179 df-po 5187 df-so 5188 df-fr 5225 df-we 5227 df-xp 5272 df-rel 5273 df-cnv 5274 df-co 5275 df-dm 5276 df-rn 5277 df-res 5278 df-ima 5279 df-pred 5841 df-ord 5887 df-on 5888 df-lim 5889 df-suc 5890 df-iota 6012 df-fun 6051 df-fn 6052 df-f 6053 df-f1 6054 df-fo 6055 df-f1o 6056 df-fv 6057 df-ov 6816 df-om 7231 df-wrecs 7576 df-recs 7637 df-rdg 7675 df-nn 11213 df-ndx 16062 df-slot 16063 |
This theorem is referenced by: (None) |
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