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Theorem sspadd2 38676
Description: A projective subspace sum is a superset of its second summand. (ssun2 4173 analog.) (Contributed by NM, 3-Jan-2012.)
Hypotheses
Ref Expression
padd0.a 𝐴 = (Atomsβ€˜πΎ)
padd0.p + = (+π‘ƒβ€˜πΎ)
Assertion
Ref Expression
sspadd2 ((𝐾 ∈ 𝐡 ∧ 𝑋 βŠ† 𝐴 ∧ π‘Œ βŠ† 𝐴) β†’ 𝑋 βŠ† (π‘Œ + 𝑋))
Proof of Theorem sspadd2
Dummy variables π‘ž 𝑝 π‘Ÿ are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ssun2 4173 . . 3 𝑋 βŠ† (π‘Œ βˆͺ 𝑋)
2 ssun1 4172 . . 3 (π‘Œ βˆͺ 𝑋) βŠ† ((π‘Œ βˆͺ 𝑋) βˆͺ {𝑝 ∈ 𝐴 ∣ βˆƒπ‘ž ∈ π‘Œ βˆƒπ‘Ÿ ∈ 𝑋 𝑝(leβ€˜πΎ)(π‘ž(joinβ€˜πΎ)π‘Ÿ)})
31, 2sstri 3991 . 2 𝑋 βŠ† ((π‘Œ βˆͺ 𝑋) βˆͺ {𝑝 ∈ 𝐴 ∣ βˆƒπ‘ž ∈ π‘Œ βˆƒπ‘Ÿ ∈ 𝑋 𝑝(leβ€˜πΎ)(π‘ž(joinβ€˜πΎ)π‘Ÿ)})
4 eqid 2733 . . . 4 (leβ€˜πΎ) = (leβ€˜πΎ)
5 eqid 2733 . . . 4 (joinβ€˜πΎ) = (joinβ€˜πΎ)
6 padd0.a . . . 4 𝐴 = (Atomsβ€˜πΎ)
7 padd0.p . . . 4 + = (+π‘ƒβ€˜πΎ)
84, 5, 6, 7paddval 38658 . . 3 ((𝐾 ∈ 𝐡 ∧ π‘Œ βŠ† 𝐴 ∧ 𝑋 βŠ† 𝐴) β†’ (π‘Œ + 𝑋) = ((π‘Œ βˆͺ 𝑋) βˆͺ {𝑝 ∈ 𝐴 ∣ βˆƒπ‘ž ∈ π‘Œ βˆƒπ‘Ÿ ∈ 𝑋 𝑝(leβ€˜πΎ)(π‘ž(joinβ€˜πΎ)π‘Ÿ)}))
983com23 1127 . 2 ((𝐾 ∈ 𝐡 ∧ 𝑋 βŠ† 𝐴 ∧ π‘Œ βŠ† 𝐴) β†’ (π‘Œ + 𝑋) = ((π‘Œ βˆͺ 𝑋) βˆͺ {𝑝 ∈ 𝐴 ∣ βˆƒπ‘ž ∈ π‘Œ βˆƒπ‘Ÿ ∈ 𝑋 𝑝(leβ€˜πΎ)(π‘ž(joinβ€˜πΎ)π‘Ÿ)}))
103, 9sseqtrrid 4035 1 ((𝐾 ∈ 𝐡 ∧ 𝑋 βŠ† 𝐴 ∧ π‘Œ βŠ† 𝐴) β†’ 𝑋 βŠ† (π‘Œ + 𝑋))
Colors of variables: wff setvar class
Syntax hints:   β†’ wi 4   ∧ w3a 1088   = wceq 1542   ∈ wcel 2107  βˆƒwrex 3071  {crab 3433   βˆͺ cun 3946   βŠ† wss 3948   class class class wbr 5148  β€˜cfv 6541  (class class class)co 7406  lecple 17201  joincjn 18261  Atomscatm 38122  +𝑃cpadd 38655
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2155  ax-12 2172  ax-ext 2704  ax-rep 5285  ax-sep 5299  ax-nul 5306  ax-pow 5363  ax-pr 5427  ax-un 7722
This theorem depends on definitions:  df-bi 206  df-an 398  df-or 847  df-3an 1090  df-tru 1545  df-fal 1555  df-ex 1783  df-nf 1787  df-sb 2069  df-mo 2535  df-eu 2564  df-clab 2711  df-cleq 2725  df-clel 2811  df-nfc 2886  df-ne 2942  df-ral 3063  df-rex 3072  df-reu 3378  df-rab 3434  df-v 3477  df-sbc 3778  df-csb 3894  df-dif 3951  df-un 3953  df-in 3955  df-ss 3965  df-nul 4323  df-if 4529  df-pw 4604  df-sn 4629  df-pr 4631  df-op 4635  df-uni 4909  df-iun 4999  df-br 5149  df-opab 5211  df-mpt 5232  df-id 5574  df-xp 5682  df-rel 5683  df-cnv 5684  df-co 5685  df-dm 5686  df-rn 5687  df-res 5688  df-ima 5689  df-iota 6493  df-fun 6543  df-fn 6544  df-f 6545  df-f1 6546  df-fo 6547  df-f1o 6548  df-fv 6549  df-ov 7409  df-oprab 7410  df-mpo 7411  df-1st 7972  df-2nd 7973  df-padd 38656
This theorem is referenced by:  paddasslem11  38690  paddasslem12  38691  paddssw2  38704  pmodlem2  38707  pmodl42N  38711  osumcllem10N  38825  pexmidlem7N  38836  pl42lem3N  38841
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