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Theorem lsmless2x 19248
Description: Subset implies subgroup sum subset (extended domain version). (Contributed by NM, 25-Feb-2014.) (Revised by Mario Carneiro, 19-Apr-2016.)
Hypotheses
Ref Expression
lsmless2.v 𝐵 = (Base‘𝐺)
lsmless2.s = (LSSum‘𝐺)
Assertion
Ref Expression
lsmless2x (((𝐺𝑉𝑅𝐵𝑈𝐵) ∧ 𝑇𝑈) → (𝑅 𝑇) ⊆ (𝑅 𝑈))

Proof of Theorem lsmless2x
Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ssrexv 3993 . . . . 5 (𝑇𝑈 → (∃𝑧𝑇 𝑥 = (𝑦(+g𝐺)𝑧) → ∃𝑧𝑈 𝑥 = (𝑦(+g𝐺)𝑧)))
21reximdv 3204 . . . 4 (𝑇𝑈 → (∃𝑦𝑅𝑧𝑇 𝑥 = (𝑦(+g𝐺)𝑧) → ∃𝑦𝑅𝑧𝑈 𝑥 = (𝑦(+g𝐺)𝑧)))
32adantl 482 . . 3 (((𝐺𝑉𝑅𝐵𝑈𝐵) ∧ 𝑇𝑈) → (∃𝑦𝑅𝑧𝑇 𝑥 = (𝑦(+g𝐺)𝑧) → ∃𝑦𝑅𝑧𝑈 𝑥 = (𝑦(+g𝐺)𝑧)))
4 simpl1 1190 . . . 4 (((𝐺𝑉𝑅𝐵𝑈𝐵) ∧ 𝑇𝑈) → 𝐺𝑉)
5 simpl2 1191 . . . 4 (((𝐺𝑉𝑅𝐵𝑈𝐵) ∧ 𝑇𝑈) → 𝑅𝐵)
6 simpr 485 . . . . 5 (((𝐺𝑉𝑅𝐵𝑈𝐵) ∧ 𝑇𝑈) → 𝑇𝑈)
7 simpl3 1192 . . . . 5 (((𝐺𝑉𝑅𝐵𝑈𝐵) ∧ 𝑇𝑈) → 𝑈𝐵)
86, 7sstrd 3936 . . . 4 (((𝐺𝑉𝑅𝐵𝑈𝐵) ∧ 𝑇𝑈) → 𝑇𝐵)
9 lsmless2.v . . . . 5 𝐵 = (Base‘𝐺)
10 eqid 2740 . . . . 5 (+g𝐺) = (+g𝐺)
11 lsmless2.s . . . . 5 = (LSSum‘𝐺)
129, 10, 11lsmelvalx 19243 . . . 4 ((𝐺𝑉𝑅𝐵𝑇𝐵) → (𝑥 ∈ (𝑅 𝑇) ↔ ∃𝑦𝑅𝑧𝑇 𝑥 = (𝑦(+g𝐺)𝑧)))
134, 5, 8, 12syl3anc 1370 . . 3 (((𝐺𝑉𝑅𝐵𝑈𝐵) ∧ 𝑇𝑈) → (𝑥 ∈ (𝑅 𝑇) ↔ ∃𝑦𝑅𝑧𝑇 𝑥 = (𝑦(+g𝐺)𝑧)))
149, 10, 11lsmelvalx 19243 . . . 4 ((𝐺𝑉𝑅𝐵𝑈𝐵) → (𝑥 ∈ (𝑅 𝑈) ↔ ∃𝑦𝑅𝑧𝑈 𝑥 = (𝑦(+g𝐺)𝑧)))
1514adantr 481 . . 3 (((𝐺𝑉𝑅𝐵𝑈𝐵) ∧ 𝑇𝑈) → (𝑥 ∈ (𝑅 𝑈) ↔ ∃𝑦𝑅𝑧𝑈 𝑥 = (𝑦(+g𝐺)𝑧)))
163, 13, 153imtr4d 294 . 2 (((𝐺𝑉𝑅𝐵𝑈𝐵) ∧ 𝑇𝑈) → (𝑥 ∈ (𝑅 𝑇) → 𝑥 ∈ (𝑅 𝑈)))
1716ssrdv 3932 1 (((𝐺𝑉𝑅𝐵𝑈𝐵) ∧ 𝑇𝑈) → (𝑅 𝑇) ⊆ (𝑅 𝑈))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wa 396  w3a 1086   = wceq 1542  wcel 2110  wrex 3067  wss 3892  cfv 6432  (class class class)co 7271  Basecbs 16910  +gcplusg 16960  LSSumclsm 19237
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 1975  ax-7 2015  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2158  ax-12 2175  ax-ext 2711  ax-rep 5214  ax-sep 5227  ax-nul 5234  ax-pow 5292  ax-pr 5356  ax-un 7582
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3an 1088  df-tru 1545  df-fal 1555  df-ex 1787  df-nf 1791  df-sb 2072  df-mo 2542  df-eu 2571  df-clab 2718  df-cleq 2732  df-clel 2818  df-nfc 2891  df-ne 2946  df-ral 3071  df-rex 3072  df-reu 3073  df-rab 3075  df-v 3433  df-sbc 3721  df-csb 3838  df-dif 3895  df-un 3897  df-in 3899  df-ss 3909  df-nul 4263  df-if 4466  df-pw 4541  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4846  df-iun 4932  df-br 5080  df-opab 5142  df-mpt 5163  df-id 5490  df-xp 5596  df-rel 5597  df-cnv 5598  df-co 5599  df-dm 5600  df-rn 5601  df-res 5602  df-ima 5603  df-iota 6390  df-fun 6434  df-fn 6435  df-f 6436  df-f1 6437  df-fo 6438  df-f1o 6439  df-fv 6440  df-ov 7274  df-oprab 7275  df-mpo 7276  df-1st 7824  df-2nd 7825  df-lsm 19239
This theorem is referenced by:  lsmless2  19264  lsmssspx  20348
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