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Theorem cosnop 33270
Description: Composition of two ordered pair singletons with matching domain and range. (Contributed by Thierry Arnoux, 24-Sep-2023.)
Hypotheses
Ref Expression
cosnop.a (𝜑 → 𝐴 ∈ 𝑉)
cosnop.b (𝜑 → 𝐵 ∈ 𝑊)
cosnop.c (𝜑 → 𝐶 ∈ 𝑋)
Assertion
Ref Expression
cosnop (𝜑 → ({⟨𝐴, 𝐵⟩} ∘ {⟨𝐶, 𝐴⟩}) = {⟨𝐶, 𝐵⟩})

Proof of Theorem cosnop
StepHypRef Expression
1 cosnop.a . . 3 (𝜑 → 𝐴 ∈ 𝑉)
2 snnzg 4735 . . 3 (𝐴 ∈ 𝑉 → {𝐴} ≠ ∅)
3 xpco 6285 . . 3 ({𝐴} ≠ ∅ → (({𝐴} × {𝐵}) ∘ ({𝐶} × {𝐴})) = ({𝐶} × {𝐵}))
41, 2, 33syl 19 . 2 (𝜑 → (({𝐴} × {𝐵}) ∘ ({𝐶} × {𝐴})) = ({𝐶} × {𝐵}))
5 cosnop.b . . . 4 (𝜑 → 𝐵 ∈ 𝑊)
6 xpsng 7132 . . . 4 ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → ({𝐴} × {𝐵}) = {⟨𝐴, 𝐵⟩})
71, 5, 6syl2anc 596 . . 3 (𝜑 → ({𝐴} × {𝐵}) = {⟨𝐴, 𝐵⟩})
8 cosnop.c . . . 4 (𝜑 → 𝐶 ∈ 𝑋)
9 xpsng 7132 . . . 4 ((𝐶 ∈ 𝑋 ∧ 𝐴 ∈ 𝑉) → ({𝐶} × {𝐴}) = {⟨𝐶, 𝐴⟩})
108, 1, 9syl2anc 596 . . 3 (𝜑 → ({𝐶} × {𝐴}) = {⟨𝐶, 𝐴⟩})
117, 10coeq12d 5842 . 2 (𝜑 → (({𝐴} × {𝐵}) ∘ ({𝐶} × {𝐴})) = ({⟨𝐴, 𝐵⟩} ∘ {⟨𝐶, 𝐴⟩}))
12 xpsng 7132 . . 3 ((𝐶 ∈ 𝑋 ∧ 𝐵 ∈ 𝑊) → ({𝐶} × {𝐵}) = {⟨𝐶, 𝐵⟩})
138, 5, 12syl2anc 596 . 2 (𝜑 → ({𝐶} × {𝐵}) = {⟨𝐶, 𝐵⟩})
144, 11, 133eqtr3d 2804 1 (𝜑 → ({⟨𝐴, 𝐵⟩} ∘ {⟨𝐶, 𝐴⟩}) = {⟨𝐶, 𝐵⟩})
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   = wceq 1570   ∈ wcel 2145   ≠ wne 2956  ∅c0 4279  {csn 4584  ⟨cop 4590   × cxp 5649   ∘ ccom 5655
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2733  ax-sep 5249  ax-pr 5391
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3078  df-rex 3088  df-reu 3367  df-rab 3414  df-v 3453  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-br 5104  df-opab 5168  df-mpt 5187  df-id 5546  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-fun 6533  df-fn 6534  df-f 6535  df-f1 6536  df-fo 6537  df-f1o 6538
This theorem is used by:  coprprop  33274
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