Theorem f1opprod 5844

Description: The parallel product of two bijections is a bijection. (Contributed by SF, 24-Feb-2015.)

Assertion

Ref	Expression
f1opprod	⊢ ((F:A–1-1-onto→C ∧ G:B–1-1-onto→D) → PProd (F, G):(A × B)–1-1-onto→(C × D))

Proof of Theorem f1opprod

Step	Hyp	Ref	Expression
1		fnpprod 5843	. . . 4 ⊢ ((F Fn A ∧ G Fn B) → PProd (F, G) Fn (A × B))
2		fnpprod 5843	. . . . 5 ⊢ ((◡F Fn C ∧ ◡G Fn D) → PProd (◡F, ◡G) Fn (C × D))
3		cnvpprod 5841	. . . . . 6 ⊢ ◡ PProd (F, G) = PProd (◡F, ◡G)
4	3	fneq1i 5178	. . . . 5 ⊢ (◡ PProd (F, G) Fn (C × D) ↔ PProd (◡F, ◡G) Fn (C × D))
5	2, 4	sylibr 203	. . . 4 ⊢ ((◡F Fn C ∧ ◡G Fn D) → ◡ PProd (F, G) Fn (C × D))
6	1, 5	anim12i 549	. . 3 ⊢ (((F Fn A ∧ G Fn B) ∧ (◡F Fn C ∧ ◡G Fn D)) → ( PProd (F, G) Fn (A × B) ∧ ◡ PProd (F, G) Fn (C × D)))
7	6	an4s 799	. 2 ⊢ (((F Fn A ∧ ◡F Fn C) ∧ (G Fn B ∧ ◡G Fn D)) → ( PProd (F, G) Fn (A × B) ∧ ◡ PProd (F, G) Fn (C × D)))
8		dff1o4 5294	. . 3 ⊢ (F:A–1-1-onto→C ↔ (F Fn A ∧ ◡F Fn C))
9		dff1o4 5294	. . 3 ⊢ (G:B–1-1-onto→D ↔ (G Fn B ∧ ◡G Fn D))
10	8, 9	anbi12i 678	. 2 ⊢ ((F:A–1-1-onto→C ∧ G:B–1-1-onto→D) ↔ ((F Fn A ∧ ◡F Fn C) ∧ (G Fn B ∧ ◡G Fn D)))
11		dff1o4 5294	. 2 ⊢ ( PProd (F, G):(A × B)–1-1-onto→(C × D) ↔ ( PProd (F, G) Fn (A × B) ∧ ◡ PProd (F, G) Fn (C × D)))
12	7, 10, 11	3imtr4i 257	1 ⊢ ((F:A–1-1-onto→C ∧ G:B–1-1-onto→D) → PProd (F, G):(A × B)–1-1-onto→(C × D))

Syntax hints:   → wi 4   ∧ wa 358   × cxp 4770  ^◡ccnv 4771   Fn wfn 4776  –1-1-onto→wf1o 4780   PProd cpprod 5737

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-13 1712  ax-14 1714  ax-6 1729  ax-7 1734  ax-11 1746  ax-12 1925  ax-ext 2334  ax-nin 4078  ax-xp 4079  ax-cnv 4080  ax-1c 4081  ax-sset 4082  ax-si 4083  ax-ins2 4084  ax-ins3 4085  ax-typlower 4086  ax-sn 4087

This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3or 935  df-3an 936  df-nan 1288  df-tru 1319  df-ex 1542  df-nf 1545  df-sb 1649  df-eu 2208  df-mo 2209  df-clab 2340  df-cleq 2346  df-clel 2349  df-nfc 2478  df-ne 2518  df-ral 2619  df-rex 2620  df-reu 2621  df-rmo 2622  df-rab 2623  df-v 2861  df-sbc 3047  df-nin 3211  df-compl 3212  df-in 3213  df-un 3214  df-dif 3215  df-symdif 3216  df-ss 3259  df-pss 3261  df-nul 3551  df-if 3663  df-pw 3724  df-sn 3741  df-pr 3742  df-uni 3892  df-int 3927  df-opk 4058  df-1c 4136  df-pw1 4137  df-uni1 4138  df-xpk 4185  df-cnvk 4186  df-ins2k 4187  df-ins3k 4188  df-imak 4189  df-cok 4190  df-p6 4191  df-sik 4192  df-ssetk 4193  df-imagek 4194  df-idk 4195  df-iota 4339  df-0c 4377  df-addc 4378  df-nnc 4379  df-fin 4380  df-lefin 4440  df-ltfin 4441  df-ncfin 4442  df-tfin 4443  df-evenfin 4444  df-oddfin 4445  df-sfin 4446  df-spfin 4447  df-phi 4565  df-op 4566  df-proj1 4567  df-proj2 4568  df-opab 4623  df-br 4640  df-1st 4723  df-co 4726  df-ima 4727  df-id 4767  df-xp 4784  df-cnv 4785  df-rn 4786  df-dm 4787  df-fun 4789  df-fn 4790  df-f 4791  df-f1 4792  df-fo 4793  df-f1o 4794  df-2nd 4797  df-txp 5736  df-pprod 5738

This theorem is referenced by:  xpen  6055