Theorem ustimasn 24143

Description: Lemma for ustuqtop 24161. (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 6019	. 2 ⊢ (𝑉 “ {𝑃}) ⊆ ran 𝑉
2		ustssxp 24120	. . . 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 5878	. . . 4 ⊢ (𝑉 ⊆ (𝑋 × 𝑋) → ran 𝑉 ⊆ ran (𝑋 × 𝑋))
5		rnxpid 6120	. . . 4 ⊢ ran (𝑋 × 𝑋) = 𝑋
6	4, 5	sseqtrdi 3970	. . 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 3941	1 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ 𝑃 ∈ 𝑋) → (𝑉 “ {𝑃}) ⊆ 𝑋)

Syntax hints:   → wi 4   ∧ w3a 1086   ∈ wcel 2111   ⊆ wss 3897  {csn 4573   × cxp 5612  ran crn 5615   “ cima 5617  ‘cfv 6481  UnifOncust 24115

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-10 2144  ax-11 2160  ax-12 2180  ax-ext 2703  ax-sep 5232  ax-nul 5242  ax-pow 5301  ax-pr 5368  ax-un 7668

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2535  df-eu 2564  df-clab 2710  df-cleq 2723  df-clel 2806  df-nfc 2881  df-ne 2929  df-ral 3048  df-rex 3057  df-rab 3396  df-v 3438  df-dif 3900  df-un 3902  df-in 3904  df-ss 3914  df-nul 4281  df-if 4473  df-pw 4549  df-sn 4574  df-pr 4576  df-op 4580  df-uni 4857  df-br 5090  df-opab 5152  df-mpt 5171  df-id 5509  df-xp 5620  df-rel 5621  df-cnv 5622  df-co 5623  df-dm 5624  df-rn 5625  df-res 5626  df-ima 5627  df-iota 6437  df-fun 6483  df-fv 6489  df-ust 24116

This theorem is referenced by:  ustuqtop0  24155  ustuqtop4  24159  utopreg  24167  ucncn  24199