Theorem tposco 7923

Description: Transposition of a composition. (Contributed by Mario Carneiro, 4-Oct-2015.)

Assertion

Ref	Expression
tposco	⊢ tpos (𝐹 ∘ 𝐺) = (𝐹 ∘ tpos 𝐺)

Proof of Theorem tposco

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		coass 6118	. 2 ⊢ ((𝐹 ∘ 𝐺) ∘ (𝑥 ∈ ((V × V) ∪ {∅}) ↦ ∪ ◡{𝑥})) = (𝐹 ∘ (𝐺 ∘ (𝑥 ∈ ((V × V) ∪ {∅}) ↦ ∪ ◡{𝑥})))
2		dftpos4 7911	. 2 ⊢ tpos (𝐹 ∘ 𝐺) = ((𝐹 ∘ 𝐺) ∘ (𝑥 ∈ ((V × V) ∪ {∅}) ↦ ∪ ◡{𝑥}))
3		dftpos4 7911	. . 3 ⊢ tpos 𝐺 = (𝐺 ∘ (𝑥 ∈ ((V × V) ∪ {∅}) ↦ ∪ ◡{𝑥}))
4	3	coeq2i 5731	. 2 ⊢ (𝐹 ∘ tpos 𝐺) = (𝐹 ∘ (𝐺 ∘ (𝑥 ∈ ((V × V) ∪ {∅}) ↦ ∪ ◡{𝑥})))
5	1, 2, 4	3eqtr4i 2854	1 ⊢ tpos (𝐹 ∘ 𝐺) = (𝐹 ∘ tpos 𝐺)

Syntax hints:   = wceq 1537  Vcvv 3494   ∪ cun 3934  ∅c0 4291  {csn 4567  ∪ cuni 4838   ↦ cmpt 5146   × cxp 5553  ^◡ccnv 5554   ∘ ccom 5559  tpos ctpos 7891

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 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2793  ax-sep 5203  ax-nul 5210  ax-pow 5266  ax-pr 5330  ax-un 7461

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-ral 3143  df-rex 3144  df-rab 3147  df-v 3496  df-sbc 3773  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4839  df-br 5067  df-opab 5129  df-mpt 5147  df-id 5460  df-xp 5561  df-rel 5562  df-cnv 5563  df-co 5564  df-dm 5565  df-rn 5566  df-res 5567  df-ima 5568  df-iota 6314  df-fun 6357  df-fn 6358  df-fv 6363  df-tpos 7892

This theorem is referenced by: (None)