| Mathbox for Alexander van der Vekens |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > gsumfsupp | Structured version Visualization version GIF version | ||
| Description: A group sum of a family can be restricted to the support of that family without changing its value, provided that that support is finite. This corresponds to the definition of an (infinite) product in [Lang] p. 5, last two formulas. (Contributed by AV, 27-Dec-2023.) |
| Ref | Expression |
|---|---|
| gsumfsupp.b | ⊢ 𝐵 = (Base‘𝐺) |
| gsumfsupp.z | ⊢ 0 = (0g‘𝐺) |
| gsumfsupp.s | ⊢ 𝐼 = (𝐹 supp 0 ) |
| gsumfsupp.g | ⊢ (𝜑 → 𝐺 ∈ CMnd) |
| gsumfsupp.a | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
| gsumfsupp.f | ⊢ (𝜑 → 𝐹:𝐴⟶𝐵) |
| gsumfsupp.w | ⊢ (𝜑 → 𝐹 finSupp 0 ) |
| Ref | Expression |
|---|---|
| gsumfsupp | ⊢ (𝜑 → (𝐺 Σg (𝐹 ↾ 𝐼)) = (𝐺 Σg 𝐹)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | gsumfsupp.b | . 2 ⊢ 𝐵 = (Base‘𝐺) | |
| 2 | gsumfsupp.z | . 2 ⊢ 0 = (0g‘𝐺) | |
| 3 | gsumfsupp.g | . 2 ⊢ (𝜑 → 𝐺 ∈ CMnd) | |
| 4 | gsumfsupp.a | . 2 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
| 5 | gsumfsupp.f | . 2 ⊢ (𝜑 → 𝐹:𝐴⟶𝐵) | |
| 6 | gsumfsupp.s | . . . 4 ⊢ 𝐼 = (𝐹 supp 0 ) | |
| 7 | 6 | eqimss2i 4016 | . . 3 ⊢ (𝐹 supp 0 ) ⊆ 𝐼 |
| 8 | 7 | a1i 11 | . 2 ⊢ (𝜑 → (𝐹 supp 0 ) ⊆ 𝐼) |
| 9 | gsumfsupp.w | . 2 ⊢ (𝜑 → 𝐹 finSupp 0 ) | |
| 10 | 1, 2, 3, 4, 5, 8, 9 | gsumres 19849 | 1 ⊢ (𝜑 → (𝐺 Σg (𝐹 ↾ 𝐼)) = (𝐺 Σg 𝐹)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 ⊆ wss 3922 class class class wbr 5115 ↾ cres 5648 ⟶wf 6515 ‘cfv 6519 (class class class)co 7394 supp csupp 8148 finSupp cfsupp 9330 Basecbs 17185 0gc0g 17408 Σg cgsu 17409 CMndccmn 19716 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-rep 5242 ax-sep 5259 ax-nul 5269 ax-pow 5328 ax-pr 5395 ax-un 7718 ax-cnex 11142 ax-resscn 11143 ax-1cn 11144 ax-icn 11145 ax-addcl 11146 ax-addrcl 11147 ax-mulcl 11148 ax-mulrcl 11149 ax-mulcom 11150 ax-addass 11151 ax-mulass 11152 ax-distr 11153 ax-i2m1 11154 ax-1ne0 11155 ax-1rid 11156 ax-rnegex 11157 ax-rrecex 11158 ax-cnre 11159 ax-pre-lttri 11160 ax-pre-lttrn 11161 ax-pre-ltadd 11162 ax-pre-mulgt0 11163 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2880 df-ne 2928 df-nel 3032 df-ral 3047 df-rex 3056 df-rmo 3357 df-reu 3358 df-rab 3412 df-v 3457 df-sbc 3762 df-csb 3871 df-dif 3925 df-un 3927 df-in 3929 df-ss 3939 df-pss 3942 df-nul 4305 df-if 4497 df-pw 4573 df-sn 4598 df-pr 4600 df-op 4604 df-uni 4880 df-int 4919 df-iun 4965 df-br 5116 df-opab 5178 df-mpt 5197 df-tr 5223 df-id 5541 df-eprel 5546 df-po 5554 df-so 5555 df-fr 5599 df-se 5600 df-we 5601 df-xp 5652 df-rel 5653 df-cnv 5654 df-co 5655 df-dm 5656 df-rn 5657 df-res 5658 df-ima 5659 df-pred 6282 df-ord 6343 df-on 6344 df-lim 6345 df-suc 6346 df-iota 6472 df-fun 6521 df-fn 6522 df-f 6523 df-f1 6524 df-fo 6525 df-f1o 6526 df-fv 6527 df-isom 6528 df-riota 7351 df-ov 7397 df-oprab 7398 df-mpo 7399 df-om 7851 df-1st 7977 df-2nd 7978 df-supp 8149 df-frecs 8269 df-wrecs 8300 df-recs 8349 df-rdg 8387 df-1o 8443 df-er 8682 df-en 8923 df-dom 8924 df-sdom 8925 df-fin 8926 df-fsupp 9331 df-oi 9481 df-card 9910 df-pnf 11228 df-mnf 11229 df-xr 11230 df-ltxr 11231 df-le 11232 df-sub 11425 df-neg 11426 df-nn 12198 df-n0 12459 df-z 12546 df-uz 12810 df-fz 13482 df-fzo 13629 df-seq 13977 df-hash 14306 df-0g 17410 df-gsum 17411 df-mgm 18573 df-sgrp 18652 df-mnd 18668 df-cntz 19255 df-cmn 19718 |
| This theorem is referenced by: (None) |
| Copyright terms: Public domain | W3C validator |