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| Mirrors > Home > MPE Home > Th. List > estrcid | Structured version Visualization version GIF version | ||
| Description: The identity arrow in the category of extensible structures is the identity function of base sets. (Contributed by AV, 8-Mar-2020.) |
| Ref | Expression |
|---|---|
| estrccat.c | ⊢ 𝐶 = (ExtStrCat‘𝑈) |
| estrcid.o | ⊢ 1 = (Id‘𝐶) |
| estrcid.u | ⊢ (𝜑 → 𝑈 ∈ 𝑉) |
| estrcid.x | ⊢ (𝜑 → 𝑋 ∈ 𝑈) |
| Ref | Expression |
|---|---|
| estrcid | ⊢ (𝜑 → ( 1 ‘𝑋) = ( I ↾ (Base‘𝑋))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | estrcid.o | . . 3 ⊢ 1 = (Id‘𝐶) | |
| 2 | estrcid.u | . . . . 5 ⊢ (𝜑 → 𝑈 ∈ 𝑉) | |
| 3 | estrccat.c | . . . . . 6 ⊢ 𝐶 = (ExtStrCat‘𝑈) | |
| 4 | 3 | estrccatid 18222 | . . . . 5 ⊢ (𝑈 ∈ 𝑉 → (𝐶 ∈ Cat ∧ (Id‘𝐶) = (𝑥 ∈ 𝑈 ↦ ( I ↾ (Base‘𝑥))))) |
| 5 | 2, 4 | syl 18 | . . . 4 ⊢ (𝜑 → (𝐶 ∈ Cat ∧ (Id‘𝐶) = (𝑥 ∈ 𝑈 ↦ ( I ↾ (Base‘𝑥))))) |
| 6 | 5 | simprd 501 | . . 3 ⊢ (𝜑 → (Id‘𝐶) = (𝑥 ∈ 𝑈 ↦ ( I ↾ (Base‘𝑥)))) |
| 7 | 1, 6 | eqtrid 2809 | . 2 ⊢ (𝜑 → 1 = (𝑥 ∈ 𝑈 ↦ ( I ↾ (Base‘𝑥)))) |
| 8 | fveq2 6882 | . . . 4 ⊢ (𝑥 = 𝑋 → (Base‘𝑥) = (Base‘𝑋)) | |
| 9 | 8 | reseq2d 5976 | . . 3 ⊢ (𝑥 = 𝑋 → ( I ↾ (Base‘𝑥)) = ( I ↾ (Base‘𝑋))) |
| 10 | 9 | adantl 487 | . 2 ⊢ ((𝜑 ∧ 𝑥 = 𝑋) → ( I ↾ (Base‘𝑥)) = ( I ↾ (Base‘𝑋))) |
| 11 | estrcid.x | . 2 ⊢ (𝜑 → 𝑋 ∈ 𝑈) | |
| 12 | fvexd 6897 | . . 3 ⊢ (𝜑 → (Base‘𝑋) ∈ V) | |
| 13 | 12 | resiexd 7218 | . 2 ⊢ (𝜑 → ( I ↾ (Base‘𝑋)) ∈ V) |
| 14 | 7, 10, 11, 13 | fvmptd 6998 | 1 ⊢ (𝜑 → ( 1 ‘𝑋) = ( I ↾ (Base‘𝑋))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 Vcvv 3453 ↦ cmpt 5190 I cid 5553 ↾ cres 5661 ‘cfv 6537 Basecbs 17303 Catccat 17754 Idccid 17755 ExtStrCatcestrc 18212 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7739 ax-cnex 11181 ax-resscn 11182 ax-1cn 11183 ax-icn 11184 ax-addcl 11185 ax-addrcl 11186 ax-mulcl 11187 ax-mulrcl 11188 ax-mulcom 11189 ax-addass 11190 ax-mulass 11191 ax-distr 11192 ax-i2m1 11193 ax-1ne0 11194 ax-1rid 11195 ax-rnegex 11196 ax-rrecex 11197 ax-cnre 11198 ax-pre-lttri 11199 ax-pre-lttrn 11200 ax-pre-ltadd 11201 ax-pre-mulgt0 11202 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-tp 4592 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7866 df-1st 7989 df-2nd 7990 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-1o 8458 df-er 8699 df-map 8831 df-en 8956 df-dom 8957 df-sdom 8958 df-fin 8959 df-pnf 11270 df-mnf 11271 df-xr 11272 df-ltxr 11273 df-le 11274 df-sub 11468 df-neg 11469 df-nn 12259 df-2 12328 df-3 12329 df-4 12330 df-5 12331 df-6 12332 df-7 12333 df-8 12334 df-9 12335 df-n0 12530 df-z 12617 df-dec 12738 df-uz 12889 df-fz 13562 df-struct 17241 df-slot 17276 df-ndx 17288 df-base 17304 df-hom 17368 df-cco 17369 df-cat 17758 df-cid 17759 df-estrc 18213 |
| This theorem is used by: funcestrcsetclem7 18236 funcsetcestrclem7 18251 rnghmsubcsetclem1 20792 rngcid 20796 rhmsubcsetclem1 20821 ringcid 20825 |
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