Theorem ustimasn 24123

Description: Lemma for ustuqtop 24141. (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 6045	. 2 ⊢ (𝑉 “ {𝑃}) ⊆ ran 𝑉
2		ustssxp 24099	. . . 4 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈) → 𝑉 ⊆ (𝑋 × 𝑋))
3	2	3adant3 1132	. . 3 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ 𝑃 ∈ 𝑋) → 𝑉 ⊆ (𝑋 × 𝑋))
4		rnss 5906	. . . 4 ⊢ (𝑉 ⊆ (𝑋 × 𝑋) → ran 𝑉 ⊆ ran (𝑋 × 𝑋))
5		rnxpid 6149	. . . 4 ⊢ ran (𝑋 × 𝑋) = 𝑋
6	4, 5	sseqtrdi 3990	. . 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 3961	1 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ 𝑃 ∈ 𝑋) → (𝑉 “ {𝑃}) ⊆ 𝑋)

Syntax hints:   → wi 4   ∧ w3a 1086   ∈ wcel 2109   ⊆ wss 3917  {csn 4592   × cxp 5639  ran crn 5642   “ cima 5644  ‘cfv 6514  UnifOncust 24094

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2702  ax-sep 5254  ax-nul 5264  ax-pow 5323  ax-pr 5390  ax-un 7714

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2534  df-eu 2563  df-clab 2709  df-cleq 2722  df-clel 2804  df-nfc 2879  df-ne 2927  df-ral 3046  df-rex 3055  df-rab 3409  df-v 3452  df-dif 3920  df-un 3922  df-in 3924  df-ss 3934  df-nul 4300  df-if 4492  df-pw 4568  df-sn 4593  df-pr 4595  df-op 4599  df-uni 4875  df-br 5111  df-opab 5173  df-mpt 5192  df-id 5536  df-xp 5647  df-rel 5648  df-cnv 5649  df-co 5650  df-dm 5651  df-rn 5652  df-res 5653  df-ima 5654  df-iota 6467  df-fun 6516  df-fv 6522  df-ust 24095

This theorem is referenced by:  ustuqtop0  24135  ustuqtop4  24139  utopreg  24147  ucncn  24179