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Theorem gsumzcl2 19830
Description: Closure of a finite group sum. This theorem has a weaker hypothesis than gsumzcl 19831, because it is not required that 𝐹 is a function (actually, the hypothesis always holds for any proper class 𝐹). (Contributed by Mario Carneiro, 24-Apr-2016.) (Revised by AV, 1-Jun-2019.)
Hypotheses
Ref Expression
gsumzcl.b 𝐡 = (Baseβ€˜πΊ)
gsumzcl.0 0 = (0gβ€˜πΊ)
gsumzcl.z 𝑍 = (Cntzβ€˜πΊ)
gsumzcl.g (πœ‘ β†’ 𝐺 ∈ Mnd)
gsumzcl.a (πœ‘ β†’ 𝐴 ∈ 𝑉)
gsumzcl.f (πœ‘ β†’ 𝐹:𝐴⟢𝐡)
gsumzcl.c (πœ‘ β†’ ran 𝐹 βŠ† (π‘β€˜ran 𝐹))
gsumzcl2.w (πœ‘ β†’ (𝐹 supp 0 ) ∈ Fin)
Assertion
Ref Expression
gsumzcl2 (πœ‘ β†’ (𝐺 Ξ£g 𝐹) ∈ 𝐡)
Proof of Theorem gsumzcl2
Dummy variables 𝑓 π‘˜ π‘₯ are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 gsumzcl.f . . . . . . 7 (πœ‘ β†’ 𝐹:𝐴⟢𝐡)
2 gsumzcl.a . . . . . . 7 (πœ‘ β†’ 𝐴 ∈ 𝑉)
3 gsumzcl.0 . . . . . . . . 9 0 = (0gβ€˜πΊ)
43fvexi 6899 . . . . . . . 8 0 ∈ V
54a1i 11 . . . . . . 7 (πœ‘ β†’ 0 ∈ V)
6 ssidd 4000 . . . . . . 7 (πœ‘ β†’ (𝐹 supp 0 ) βŠ† (𝐹 supp 0 ))
71, 2, 5, 6gsumcllem 19828 . . . . . 6 ((πœ‘ ∧ (𝐹 supp 0 ) = βˆ…) β†’ 𝐹 = (π‘˜ ∈ 𝐴 ↦ 0 ))
87oveq2d 7421 . . . . 5 ((πœ‘ ∧ (𝐹 supp 0 ) = βˆ…) β†’ (𝐺 Ξ£g 𝐹) = (𝐺 Ξ£g (π‘˜ ∈ 𝐴 ↦ 0 )))
9 gsumzcl.g . . . . . . 7 (πœ‘ β†’ 𝐺 ∈ Mnd)
103gsumz 18761 . . . . . . 7 ((𝐺 ∈ Mnd ∧ 𝐴 ∈ 𝑉) β†’ (𝐺 Ξ£g (π‘˜ ∈ 𝐴 ↦ 0 )) = 0 )
119, 2, 10syl2anc 583 . . . . . 6 (πœ‘ β†’ (𝐺 Ξ£g (π‘˜ ∈ 𝐴 ↦ 0 )) = 0 )
1211adantr 480 . . . . 5 ((πœ‘ ∧ (𝐹 supp 0 ) = βˆ…) β†’ (𝐺 Ξ£g (π‘˜ ∈ 𝐴 ↦ 0 )) = 0 )
138, 12eqtrd 2766 . . . 4 ((πœ‘ ∧ (𝐹 supp 0 ) = βˆ…) β†’ (𝐺 Ξ£g 𝐹) = 0 )
14 gsumzcl.b . . . . . . 7 𝐡 = (Baseβ€˜πΊ)
1514, 3mndidcl 18682 . . . . . 6 (𝐺 ∈ Mnd β†’ 0 ∈ 𝐡)
169, 15syl 17 . . . . 5 (πœ‘ β†’ 0 ∈ 𝐡)
1716adantr 480 . . . 4 ((πœ‘ ∧ (𝐹 supp 0 ) = βˆ…) β†’ 0 ∈ 𝐡)
1813, 17eqeltrd 2827 . . 3 ((πœ‘ ∧ (𝐹 supp 0 ) = βˆ…) β†’ (𝐺 Ξ£g 𝐹) ∈ 𝐡)
1918ex 412 . 2 (πœ‘ β†’ ((𝐹 supp 0 ) = βˆ… β†’ (𝐺 Ξ£g 𝐹) ∈ 𝐡))
20 eqid 2726 . . . . . . 7 (+gβ€˜πΊ) = (+gβ€˜πΊ)
21 gsumzcl.z . . . . . . 7 𝑍 = (Cntzβ€˜πΊ)
229adantr 480 . . . . . . 7 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ 𝐺 ∈ Mnd)
232adantr 480 . . . . . . 7 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ 𝐴 ∈ 𝑉)
241adantr 480 . . . . . . 7 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ 𝐹:𝐴⟢𝐡)
25 gsumzcl.c . . . . . . . 8 (πœ‘ β†’ ran 𝐹 βŠ† (π‘β€˜ran 𝐹))
2625adantr 480 . . . . . . 7 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ ran 𝐹 βŠ† (π‘β€˜ran 𝐹))
27 simprl 768 . . . . . . 7 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ (β™―β€˜(𝐹 supp 0 )) ∈ β„•)
28 f1of1 6826 . . . . . . . . 9 (𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ) β†’ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1β†’(𝐹 supp 0 ))
2928ad2antll 726 . . . . . . . 8 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1β†’(𝐹 supp 0 ))
30 suppssdm 8162 . . . . . . . . . 10 (𝐹 supp 0 ) βŠ† dom 𝐹
3130, 1fssdm 6731 . . . . . . . . 9 (πœ‘ β†’ (𝐹 supp 0 ) βŠ† 𝐴)
3231adantr 480 . . . . . . . 8 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ (𝐹 supp 0 ) βŠ† 𝐴)
33 f1ss 6787 . . . . . . . 8 ((𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1β†’(𝐹 supp 0 ) ∧ (𝐹 supp 0 ) βŠ† 𝐴) β†’ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1→𝐴)
3429, 32, 33syl2anc 583 . . . . . . 7 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1→𝐴)
35 ssid 3999 . . . . . . . 8 (𝐹 supp 0 ) βŠ† (𝐹 supp 0 )
36 f1ofo 6834 . . . . . . . . . 10 (𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ) β†’ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–ontoβ†’(𝐹 supp 0 ))
37 forn 6802 . . . . . . . . . 10 (𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–ontoβ†’(𝐹 supp 0 ) β†’ ran 𝑓 = (𝐹 supp 0 ))
3836, 37syl 17 . . . . . . . . 9 (𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ) β†’ ran 𝑓 = (𝐹 supp 0 ))
3938ad2antll 726 . . . . . . . 8 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ ran 𝑓 = (𝐹 supp 0 ))
4035, 39sseqtrrid 4030 . . . . . . 7 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ (𝐹 supp 0 ) βŠ† ran 𝑓)
41 eqid 2726 . . . . . . 7 ((𝐹 ∘ 𝑓) supp 0 ) = ((𝐹 ∘ 𝑓) supp 0 )
4214, 3, 20, 21, 22, 23, 24, 26, 27, 34, 40, 41gsumval3 19827 . . . . . 6 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ (𝐺 Ξ£g 𝐹) = (seq1((+gβ€˜πΊ), (𝐹 ∘ 𝑓))β€˜(β™―β€˜(𝐹 supp 0 ))))
43 nnuz 12869 . . . . . . . 8 β„• = (β„€β‰₯β€˜1)
4427, 43eleqtrdi 2837 . . . . . . 7 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ (β™―β€˜(𝐹 supp 0 )) ∈ (β„€β‰₯β€˜1))
45 f1f 6781 . . . . . . . . . 10 (𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1→𝐴 β†’ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))⟢𝐴)
4634, 45syl 17 . . . . . . . . 9 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))⟢𝐴)
47 fco 6735 . . . . . . . . 9 ((𝐹:𝐴⟢𝐡 ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))⟢𝐴) β†’ (𝐹 ∘ 𝑓):(1...(β™―β€˜(𝐹 supp 0 )))⟢𝐡)
4824, 46, 47syl2anc 583 . . . . . . . 8 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ (𝐹 ∘ 𝑓):(1...(β™―β€˜(𝐹 supp 0 )))⟢𝐡)
4948ffvelcdmda 7080 . . . . . . 7 (((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) ∧ π‘˜ ∈ (1...(β™―β€˜(𝐹 supp 0 )))) β†’ ((𝐹 ∘ 𝑓)β€˜π‘˜) ∈ 𝐡)
5014, 20mndcl 18675 . . . . . . . . 9 ((𝐺 ∈ Mnd ∧ π‘˜ ∈ 𝐡 ∧ π‘₯ ∈ 𝐡) β†’ (π‘˜(+gβ€˜πΊ)π‘₯) ∈ 𝐡)
51503expb 1117 . . . . . . . 8 ((𝐺 ∈ Mnd ∧ (π‘˜ ∈ 𝐡 ∧ π‘₯ ∈ 𝐡)) β†’ (π‘˜(+gβ€˜πΊ)π‘₯) ∈ 𝐡)
5222, 51sylan 579 . . . . . . 7 (((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) ∧ (π‘˜ ∈ 𝐡 ∧ π‘₯ ∈ 𝐡)) β†’ (π‘˜(+gβ€˜πΊ)π‘₯) ∈ 𝐡)
5344, 49, 52seqcl 13993 . . . . . 6 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ (seq1((+gβ€˜πΊ), (𝐹 ∘ 𝑓))β€˜(β™―β€˜(𝐹 supp 0 ))) ∈ 𝐡)
5442, 53eqeltrd 2827 . . . . 5 ((πœ‘ ∧ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))) β†’ (𝐺 Ξ£g 𝐹) ∈ 𝐡)
5554expr 456 . . . 4 ((πœ‘ ∧ (β™―β€˜(𝐹 supp 0 )) ∈ β„•) β†’ (𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ) β†’ (𝐺 Ξ£g 𝐹) ∈ 𝐡))
5655exlimdv 1928 . . 3 ((πœ‘ ∧ (β™―β€˜(𝐹 supp 0 )) ∈ β„•) β†’ (βˆƒπ‘“ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ) β†’ (𝐺 Ξ£g 𝐹) ∈ 𝐡))
5756expimpd 453 . 2 (πœ‘ β†’ (((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ βˆƒπ‘“ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 )) β†’ (𝐺 Ξ£g 𝐹) ∈ 𝐡))
58 gsumzcl2.w . . 3 (πœ‘ β†’ (𝐹 supp 0 ) ∈ Fin)
59 fz1f1o 15662 . . 3 ((𝐹 supp 0 ) ∈ Fin β†’ ((𝐹 supp 0 ) = βˆ… ∨ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ βˆƒπ‘“ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))))
6058, 59syl 17 . 2 (πœ‘ β†’ ((𝐹 supp 0 ) = βˆ… ∨ ((β™―β€˜(𝐹 supp 0 )) ∈ β„• ∧ βˆƒπ‘“ 𝑓:(1...(β™―β€˜(𝐹 supp 0 )))–1-1-ontoβ†’(𝐹 supp 0 ))))
6119, 57, 60mpjaod 857 1 (πœ‘ β†’ (𝐺 Ξ£g 𝐹) ∈ 𝐡)
Colors of variables: wff setvar class
Syntax hints:   β†’ wi 4   ∧ wa 395   ∨ wo 844   = wceq 1533  βˆƒwex 1773   ∈ wcel 2098  Vcvv 3468   βŠ† wss 3943  βˆ…c0 4317   ↦ cmpt 5224  ran crn 5670   ∘ ccom 5673  βŸΆwf 6533  β€“1-1β†’wf1 6534  β€“ontoβ†’wfo 6535  β€“1-1-ontoβ†’wf1o 6536  β€˜cfv 6537  (class class class)co 7405   supp csupp 8146  Fincfn 8941  1c1 11113  β„•cn 12216  β„€β‰₯cuz 12826  ...cfz 13490  seqcseq 13972  β™―chash 14295  Basecbs 17153  +gcplusg 17206  0gc0g 17394   Ξ£g cgsu 17395  Mndcmnd 18667  Cntzccntz 19231
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1905  ax-6 1963  ax-7 2003  ax-8 2100  ax-9 2108  ax-10 2129  ax-11 2146  ax-12 2163  ax-ext 2697  ax-rep 5278  ax-sep 5292  ax-nul 5299  ax-pow 5356  ax-pr 5420  ax-un 7722  ax-cnex 11168  ax-resscn 11169  ax-1cn 11170  ax-icn 11171  ax-addcl 11172  ax-addrcl 11173  ax-mulcl 11174  ax-mulrcl 11175  ax-mulcom 11176  ax-addass 11177  ax-mulass 11178  ax-distr 11179  ax-i2m1 11180  ax-1ne0 11181  ax-1rid 11182  ax-rnegex 11183  ax-rrecex 11184  ax-cnre 11185  ax-pre-lttri 11186  ax-pre-lttrn 11187  ax-pre-ltadd 11188  ax-pre-mulgt0 11189
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 845  df-3or 1085  df-3an 1086  df-tru 1536  df-fal 1546  df-ex 1774  df-nf 1778  df-sb 2060  df-mo 2528  df-eu 2557  df-clab 2704  df-cleq 2718  df-clel 2804  df-nfc 2879  df-ne 2935  df-nel 3041  df-ral 3056  df-rex 3065  df-rmo 3370  df-reu 3371  df-rab 3427  df-v 3470  df-sbc 3773  df-csb 3889  df-dif 3946  df-un 3948  df-in 3950  df-ss 3960  df-pss 3962  df-nul 4318  df-if 4524  df-pw 4599  df-sn 4624  df-pr 4626  df-op 4630  df-uni 4903  df-int 4944  df-iun 4992  df-br 5142  df-opab 5204  df-mpt 5225  df-tr 5259  df-id 5567  df-eprel 5573  df-po 5581  df-so 5582  df-fr 5624  df-se 5625  df-we 5626  df-xp 5675  df-rel 5676  df-cnv 5677  df-co 5678  df-dm 5679  df-rn 5680  df-res 5681  df-ima 5682  df-pred 6294  df-ord 6361  df-on 6362  df-lim 6363  df-suc 6364  df-iota 6489  df-fun 6539  df-fn 6540  df-f 6541  df-f1 6542  df-fo 6543  df-f1o 6544  df-fv 6545  df-isom 6546  df-riota 7361  df-ov 7408  df-oprab 7409  df-mpo 7410  df-om 7853  df-1st 7974  df-2nd 7975  df-supp 8147  df-frecs 8267  df-wrecs 8298  df-recs 8372  df-rdg 8411  df-1o 8467  df-er 8705  df-en 8942  df-dom 8943  df-sdom 8944  df-fin 8945  df-oi 9507  df-card 9936  df-pnf 11254  df-mnf 11255  df-xr 11256  df-ltxr 11257  df-le 11258  df-sub 11450  df-neg 11451  df-nn 12217  df-n0 12477  df-z 12563  df-uz 12827  df-fz 13491  df-fzo 13634  df-seq 13973  df-hash 14296  df-0g 17396  df-gsum 17397  df-mgm 18573  df-sgrp 18652  df-mnd 18668  df-cntz 19233
This theorem is referenced by:  gsumzcl  19831  gsumcl2  19834
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