Theorem ustimasn 24253

Description: Lemma for ustuqtop 24271. (Contributed by Thierry Arnoux, 5-Dec-2017.)

Assertion

Ref	Expression
ustimasn	⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ 𝑃 ∈ 𝑋) → (𝑉 “ {𝑃}) ⊆ 𝑋)

Proof of Theorem ustimasn

Step	Hyp	Ref	Expression
1		imassrn 6091	. 2 ⊢ (𝑉 “ {𝑃}) ⊆ ran 𝑉
2		ustssxp 24229	. . . 4 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈) → 𝑉 ⊆ (𝑋 × 𝑋))
3	2	3adant3 1131	. . 3 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ 𝑃 ∈ 𝑋) → 𝑉 ⊆ (𝑋 × 𝑋))
4		rnss 5953	. . . 4 ⊢ (𝑉 ⊆ (𝑋 × 𝑋) → ran 𝑉 ⊆ ran (𝑋 × 𝑋))
5		rnxpid 6195	. . . 4 ⊢ ran (𝑋 × 𝑋) = 𝑋
6	4, 5	sseqtrdi 4046	. . 3 ⊢ (𝑉 ⊆ (𝑋 × 𝑋) → ran 𝑉 ⊆ 𝑋)
7	3, 6	syl 17	. 2 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ 𝑃 ∈ 𝑋) → ran 𝑉 ⊆ 𝑋)
8	1, 7	sstrid 4007	1 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ 𝑃 ∈ 𝑋) → (𝑉 “ {𝑃}) ⊆ 𝑋)

Syntax hints:   → wi 4   ∧ w3a 1086   ∈ wcel 2106   ⊆ wss 3963  {csn 4631   × cxp 5687  ran crn 5690   “ cima 5692  ‘cfv 6563  UnifOncust 24224

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1908  ax-6 1965  ax-7 2005  ax-8 2108  ax-9 2116  ax-10 2139  ax-11 2155  ax-12 2175  ax-ext 2706  ax-sep 5302  ax-nul 5312  ax-pow 5371  ax-pr 5438  ax-un 7754

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1540  df-fal 1550  df-ex 1777  df-nf 1781  df-sb 2063  df-mo 2538  df-eu 2567  df-clab 2713  df-cleq 2727  df-clel 2814  df-nfc 2890  df-ne 2939  df-ral 3060  df-rex 3069  df-rab 3434  df-v 3480  df-dif 3966  df-un 3968  df-in 3970  df-ss 3980  df-nul 4340  df-if 4532  df-pw 4607  df-sn 4632  df-pr 4634  df-op 4638  df-uni 4913  df-br 5149  df-opab 5211  df-mpt 5232  df-id 5583  df-xp 5695  df-rel 5696  df-cnv 5697  df-co 5698  df-dm 5699  df-rn 5700  df-res 5701  df-ima 5702  df-iota 6516  df-fun 6565  df-fv 6571  df-ust 24225

This theorem is referenced by:  ustuqtop0  24265  ustuqtop4  24269  utopreg  24277  ucncn  24310