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Theorem slwpgp 19878
Description: A Sylow 𝑃-subgroup is a 𝑃-group. (Contributed by Mario Carneiro, 16-Jan-2015.)
Hypothesis
Ref Expression
slwpgp.1 𝑆 = (𝐺 ↾s 𝐻)
Assertion
Ref Expression
slwpgp (𝐻 ∈ (𝑃 pSyl 𝐺) → 𝑃 pGrp 𝑆)

Proof of Theorem slwpgp
StepHypRef Expression
1 eqid 2763 . . 3 𝐻 = 𝐻
2 slwsubg 19875 . . . 4 (𝐻 ∈ (𝑃 pSyl 𝐺) → 𝐻 ∈ (SubGrp‘𝐺))
3 slwpgp.1 . . . . 5 𝑆 = (𝐺 ↾s 𝐻)
43slwispgp 19876 . . . 4 ((𝐻 ∈ (𝑃 pSyl 𝐺) ∧ 𝐻 ∈ (SubGrp‘𝐺)) → ((𝐻 ⊆ 𝐻 ∧ 𝑃 pGrp 𝑆) ↔ 𝐻 = 𝐻))
52, 4mpdan 700 . . 3 (𝐻 ∈ (𝑃 pSyl 𝐺) → ((𝐻 ⊆ 𝐻 ∧ 𝑃 pGrp 𝑆) ↔ 𝐻 = 𝐻))
61, 5mpbiri 261 . 2 (𝐻 ∈ (𝑃 pSyl 𝐺) → (𝐻 ⊆ 𝐻 ∧ 𝑃 pGrp 𝑆))
76simprd 501 1 (𝐻 ∈ (𝑃 pSyl 𝐺) → 𝑃 pGrp 𝑆)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   = wceq 1570   ∈ wcel 2147   ⊆ wss 3900   class class class wbr 5108  ‘cfv 6566  (class class class)co 7451   ↾s cress 17452  SubGrpcsubg 19380   pGrp cpgp 19791   pSyl cslw 19792
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-sep 5255  ax-nul 5266  ax-pow 5334  ax-pr 5398
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-sbc 3743  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4841  df-uni 4873  df-br 5109  df-opab 5174  df-mpt 5193  df-id 5553  df-xp 5664  df-rel 5665  df-cnv 5666  df-co 5667  df-dm 5668  df-rn 5669  df-res 5670  df-ima 5671  df-iota 6520  df-fun 6568  df-fv 6574  df-ov 7454  df-oprab 7455  df-mpo 7456  df-subg 19383  df-slw 19796
This theorem is used by:  slwhash  19889  sylow2  19891  sylow3lem6  19897
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