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Theorem qtopconn 23613
Description: A quotient of a connected space is connected. (Contributed by Mario Carneiro, 24-Mar-2015.)
Hypothesis
Ref Expression
qtopcmp.1 𝑋 = 𝐽
Assertion
Ref Expression
qtopconn ((𝐽 ∈ Conn ∧ 𝐹 Fn 𝑋) → (𝐽 qTop 𝐹) ∈ Conn)

Proof of Theorem qtopconn
StepHypRef Expression
1 qtopcmp.1 . 2 𝑋 = 𝐽
2 conntop 23321 . 2 (𝐽 ∈ Conn → 𝐽 ∈ Top)
3 eqid 2729 . . 3 (𝐽 qTop 𝐹) = (𝐽 qTop 𝐹)
43cnconn 23326 . 2 ((𝐽 ∈ Conn ∧ 𝐹:𝑋onto (𝐽 qTop 𝐹) ∧ 𝐹 ∈ (𝐽 Cn (𝐽 qTop 𝐹))) → (𝐽 qTop 𝐹) ∈ Conn)
51, 2, 4qtopcmplem 23611 1 ((𝐽 ∈ Conn ∧ 𝐹 Fn 𝑋) → (𝐽 qTop 𝐹) ∈ Conn)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395   = wceq 1540  wcel 2109   cuni 4861   Fn wfn 6481  (class class class)co 7353   qTop cqtop 17426  Conncconn 23315
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 2701  ax-rep 5221  ax-sep 5238  ax-nul 5248  ax-pow 5307  ax-pr 5374  ax-un 7675
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 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-ral 3045  df-rex 3054  df-reu 3346  df-rab 3397  df-v 3440  df-sbc 3745  df-csb 3854  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-nul 4287  df-if 4479  df-pw 4555  df-sn 4580  df-pr 4582  df-op 4586  df-uni 4862  df-iun 4946  df-br 5096  df-opab 5158  df-mpt 5177  df-id 5518  df-xp 5629  df-rel 5630  df-cnv 5631  df-co 5632  df-dm 5633  df-rn 5634  df-res 5635  df-ima 5636  df-iota 6442  df-fun 6488  df-fn 6489  df-f 6490  df-f1 6491  df-fo 6492  df-f1o 6493  df-fv 6494  df-ov 7356  df-oprab 7357  df-mpo 7358  df-map 8762  df-qtop 17430  df-top 22798  df-topon 22815  df-cld 22923  df-cn 23131  df-conn 23316
This theorem is referenced by: (None)
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