| Mathbox for BJ |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > bj-endcomp | Structured version Visualization version GIF version | ||
| Description: Composition law of the monoid of endomorphisms on an object of a category. (Contributed by BJ, 5-Apr-2024.) (Proof modification is discouraged.) |
| Ref | Expression |
|---|---|
| bj-endval.c | ⊢ (𝜑 → 𝐶 ∈ Cat) |
| bj-endval.x | ⊢ (𝜑 → 𝑋 ∈ (Base‘𝐶)) |
| Ref | Expression |
|---|---|
| bj-endcomp | ⊢ (𝜑 → (+g‘((End ‘𝐶)‘𝑋)) = (〈𝑋, 𝑋〉(comp‘𝐶)𝑋)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | plusgid 17245 | . . 3 ⊢ +g = Slot (+g‘ndx) | |
| 2 | fvexd 6849 | . . 3 ⊢ (𝜑 → ((End ‘𝐶)‘𝑋) ∈ V) | |
| 3 | 1, 2 | strfvnd 17153 | . 2 ⊢ (𝜑 → (+g‘((End ‘𝐶)‘𝑋)) = (((End ‘𝐶)‘𝑋)‘(+g‘ndx))) |
| 4 | bj-endval.c | . . . 4 ⊢ (𝜑 → 𝐶 ∈ Cat) | |
| 5 | bj-endval.x | . . . 4 ⊢ (𝜑 → 𝑋 ∈ (Base‘𝐶)) | |
| 6 | 4, 5 | bj-endval 37682 | . . 3 ⊢ (𝜑 → ((End ‘𝐶)‘𝑋) = {〈(Base‘ndx), (𝑋(Hom ‘𝐶)𝑋)〉, 〈(+g‘ndx), (〈𝑋, 𝑋〉(comp‘𝐶)𝑋)〉}) |
| 7 | 6 | fveq1d 6836 | . 2 ⊢ (𝜑 → (((End ‘𝐶)‘𝑋)‘(+g‘ndx)) = ({〈(Base‘ndx), (𝑋(Hom ‘𝐶)𝑋)〉, 〈(+g‘ndx), (〈𝑋, 𝑋〉(comp‘𝐶)𝑋)〉}‘(+g‘ndx))) |
| 8 | basendxnplusgndx 17248 | . . 3 ⊢ (Base‘ndx) ≠ (+g‘ndx) | |
| 9 | fvex 6847 | . . . 4 ⊢ (+g‘ndx) ∈ V | |
| 10 | ovex 7396 | . . . 4 ⊢ (〈𝑋, 𝑋〉(comp‘𝐶)𝑋) ∈ V | |
| 11 | 9, 10 | fvpr2 7144 | . . 3 ⊢ ((Base‘ndx) ≠ (+g‘ndx) → ({〈(Base‘ndx), (𝑋(Hom ‘𝐶)𝑋)〉, 〈(+g‘ndx), (〈𝑋, 𝑋〉(comp‘𝐶)𝑋)〉}‘(+g‘ndx)) = (〈𝑋, 𝑋〉(comp‘𝐶)𝑋)) |
| 12 | 8, 11 | mp1i 13 | . 2 ⊢ (𝜑 → ({〈(Base‘ndx), (𝑋(Hom ‘𝐶)𝑋)〉, 〈(+g‘ndx), (〈𝑋, 𝑋〉(comp‘𝐶)𝑋)〉}‘(+g‘ndx)) = (〈𝑋, 𝑋〉(comp‘𝐶)𝑋)) |
| 13 | 3, 7, 12 | 3eqtrd 2779 | 1 ⊢ (𝜑 → (+g‘((End ‘𝐶)‘𝑋)) = (〈𝑋, 𝑋〉(comp‘𝐶)𝑋)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1547 ∈ wcel 2119 ≠ wne 2935 Vcvv 3432 {cpr 4564 〈cop 4568 ‘cfv 6492 (class class class)co 7363 ndxcnx 17161 Basecbs 17177 +gcplusg 17218 Hom chom 17229 compcco 17230 Catccat 17628 End cend 37680 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2712 ax-rep 5206 ax-sep 5225 ax-nul 5235 ax-pow 5301 ax-pr 5369 ax-un 7685 ax-cnex 11092 ax-resscn 11093 ax-1cn 11094 ax-icn 11095 ax-addcl 11096 ax-addrcl 11097 ax-mulcl 11098 ax-mulrcl 11099 ax-mulcom 11100 ax-addass 11101 ax-mulass 11102 ax-distr 11103 ax-i2m1 11104 ax-1ne0 11105 ax-1rid 11106 ax-rnegex 11107 ax-rrecex 11108 ax-cnre 11109 ax-pre-lttri 11110 ax-pre-lttrn 11111 ax-pre-ltadd 11112 ax-pre-mulgt0 11113 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2719 df-cleq 2732 df-clel 2815 df-nfc 2889 df-ne 2936 df-nel 3040 df-ral 3055 df-rex 3065 df-reu 3346 df-rab 3393 df-v 3434 df-sbc 3731 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4269 df-if 4462 df-pw 4538 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4846 df-iun 4930 df-br 5080 df-opab 5142 df-mpt 5161 df-tr 5187 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7320 df-ov 7366 df-oprab 7367 df-mpo 7368 df-om 7814 df-2nd 7939 df-frecs 8228 df-wrecs 8259 df-recs 8308 df-rdg 8346 df-er 8640 df-en 8891 df-dom 8892 df-sdom 8893 df-pnf 11179 df-mnf 11180 df-xr 11181 df-ltxr 11182 df-le 11183 df-sub 11377 df-neg 11378 df-nn 12173 df-2 12242 df-slot 17150 df-ndx 17162 df-base 17178 df-plusg 17231 df-bj-end 37681 |
| This theorem is referenced by: bj-endmnd 37685 |
| Copyright terms: Public domain | W3C validator |