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Mirrors > Home > MPE Home > Th. List > gsumws1 | Structured version Visualization version GIF version |
Description: A singleton composite recovers the initial symbol. (Contributed by Stefan O'Rear, 16-Aug-2015.) |
Ref | Expression |
---|---|
gsumwcl.b | ⊢ 𝐵 = (Base‘𝐺) |
Ref | Expression |
---|---|
gsumws1 | ⊢ (𝑆 ∈ 𝐵 → (𝐺 Σg 〈“𝑆”〉) = 𝑆) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | s1val 13955 | . . 3 ⊢ (𝑆 ∈ 𝐵 → 〈“𝑆”〉 = {〈0, 𝑆〉}) | |
2 | 1 | oveq2d 7175 | . 2 ⊢ (𝑆 ∈ 𝐵 → (𝐺 Σg 〈“𝑆”〉) = (𝐺 Σg {〈0, 𝑆〉})) |
3 | gsumwcl.b | . . 3 ⊢ 𝐵 = (Base‘𝐺) | |
4 | eqid 2824 | . . 3 ⊢ (+g‘𝐺) = (+g‘𝐺) | |
5 | elfvdm 6705 | . . . 4 ⊢ (𝑆 ∈ (Base‘𝐺) → 𝐺 ∈ dom Base) | |
6 | 5, 3 | eleq2s 2934 | . . 3 ⊢ (𝑆 ∈ 𝐵 → 𝐺 ∈ dom Base) |
7 | 0nn0 11915 | . . . . 5 ⊢ 0 ∈ ℕ0 | |
8 | nn0uz 12283 | . . . . 5 ⊢ ℕ0 = (ℤ≥‘0) | |
9 | 7, 8 | eleqtri 2914 | . . . 4 ⊢ 0 ∈ (ℤ≥‘0) |
10 | 9 | a1i 11 | . . 3 ⊢ (𝑆 ∈ 𝐵 → 0 ∈ (ℤ≥‘0)) |
11 | 0z 11995 | . . . . . . 7 ⊢ 0 ∈ ℤ | |
12 | f1osng 6658 | . . . . . . 7 ⊢ ((0 ∈ ℤ ∧ 𝑆 ∈ 𝐵) → {〈0, 𝑆〉}:{0}–1-1-onto→{𝑆}) | |
13 | 11, 12 | mpan 688 | . . . . . 6 ⊢ (𝑆 ∈ 𝐵 → {〈0, 𝑆〉}:{0}–1-1-onto→{𝑆}) |
14 | f1of 6618 | . . . . . 6 ⊢ ({〈0, 𝑆〉}:{0}–1-1-onto→{𝑆} → {〈0, 𝑆〉}:{0}⟶{𝑆}) | |
15 | 13, 14 | syl 17 | . . . . 5 ⊢ (𝑆 ∈ 𝐵 → {〈0, 𝑆〉}:{0}⟶{𝑆}) |
16 | snssi 4744 | . . . . 5 ⊢ (𝑆 ∈ 𝐵 → {𝑆} ⊆ 𝐵) | |
17 | 15, 16 | fssd 6531 | . . . 4 ⊢ (𝑆 ∈ 𝐵 → {〈0, 𝑆〉}:{0}⟶𝐵) |
18 | fz0sn 13010 | . . . . 5 ⊢ (0...0) = {0} | |
19 | 18 | feq2i 6509 | . . . 4 ⊢ ({〈0, 𝑆〉}:(0...0)⟶𝐵 ↔ {〈0, 𝑆〉}:{0}⟶𝐵) |
20 | 17, 19 | sylibr 236 | . . 3 ⊢ (𝑆 ∈ 𝐵 → {〈0, 𝑆〉}:(0...0)⟶𝐵) |
21 | 3, 4, 6, 10, 20 | gsumval2 17899 | . 2 ⊢ (𝑆 ∈ 𝐵 → (𝐺 Σg {〈0, 𝑆〉}) = (seq0((+g‘𝐺), {〈0, 𝑆〉})‘0)) |
22 | fvsng 6945 | . . . 4 ⊢ ((0 ∈ ℤ ∧ 𝑆 ∈ 𝐵) → ({〈0, 𝑆〉}‘0) = 𝑆) | |
23 | 11, 22 | mpan 688 | . . 3 ⊢ (𝑆 ∈ 𝐵 → ({〈0, 𝑆〉}‘0) = 𝑆) |
24 | 11, 23 | seq1i 13386 | . 2 ⊢ (𝑆 ∈ 𝐵 → (seq0((+g‘𝐺), {〈0, 𝑆〉})‘0) = 𝑆) |
25 | 2, 21, 24 | 3eqtrd 2863 | 1 ⊢ (𝑆 ∈ 𝐵 → (𝐺 Σg 〈“𝑆”〉) = 𝑆) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1536 ∈ wcel 2113 {csn 4570 〈cop 4576 dom cdm 5558 ⟶wf 6354 –1-1-onto→wf1o 6357 ‘cfv 6358 (class class class)co 7159 0cc0 10540 ℕ0cn0 11900 ℤcz 11984 ℤ≥cuz 12246 ...cfz 12895 seqcseq 13372 〈“cs1 13952 Basecbs 16486 +gcplusg 16568 Σg cgsu 16717 |
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 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2796 ax-sep 5206 ax-nul 5213 ax-pow 5269 ax-pr 5333 ax-un 7464 ax-cnex 10596 ax-resscn 10597 ax-1cn 10598 ax-icn 10599 ax-addcl 10600 ax-addrcl 10601 ax-mulcl 10602 ax-mulrcl 10603 ax-mulcom 10604 ax-addass 10605 ax-mulass 10606 ax-distr 10607 ax-i2m1 10608 ax-1ne0 10609 ax-1rid 10610 ax-rnegex 10611 ax-rrecex 10612 ax-cnre 10613 ax-pre-lttri 10614 ax-pre-lttrn 10615 ax-pre-ltadd 10616 ax-pre-mulgt0 10617 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-mo 2621 df-eu 2653 df-clab 2803 df-cleq 2817 df-clel 2896 df-nfc 2966 df-ne 3020 df-nel 3127 df-ral 3146 df-rex 3147 df-reu 3148 df-rmo 3149 df-rab 3150 df-v 3499 df-sbc 3776 df-csb 3887 df-dif 3942 df-un 3944 df-in 3946 df-ss 3955 df-pss 3957 df-nul 4295 df-if 4471 df-pw 4544 df-sn 4571 df-pr 4573 df-tp 4575 df-op 4577 df-uni 4842 df-iun 4924 df-br 5070 df-opab 5132 df-mpt 5150 df-tr 5176 df-id 5463 df-eprel 5468 df-po 5477 df-so 5478 df-fr 5517 df-we 5519 df-xp 5564 df-rel 5565 df-cnv 5566 df-co 5567 df-dm 5568 df-rn 5569 df-res 5570 df-ima 5571 df-pred 6151 df-ord 6197 df-on 6198 df-lim 6199 df-suc 6200 df-iota 6317 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-riota 7117 df-ov 7162 df-oprab 7163 df-mpo 7164 df-om 7584 df-1st 7692 df-2nd 7693 df-wrecs 7950 df-recs 8011 df-rdg 8049 df-er 8292 df-en 8513 df-dom 8514 df-sdom 8515 df-pnf 10680 df-mnf 10681 df-xr 10682 df-ltxr 10683 df-le 10684 df-sub 10875 df-neg 10876 df-nn 11642 df-n0 11901 df-z 11985 df-uz 12247 df-fz 12896 df-seq 13373 df-s1 13953 df-0g 16718 df-gsum 16719 |
This theorem is referenced by: gsumws2 18010 gsumccatsn 18011 gsumwspan 18014 frmdgsum 18030 frmdup2 18033 gsumwrev 18497 psgnunilem5 18625 psgnpmtr 18641 frgpup2 18905 cyc3genpmlem 30797 mrsubcv 32761 gsumws3 40555 gsumws4 40556 |
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