volioofmpt - Mathbox for Glauco Siliprandi

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Theorem volioofmpt 45950

Description: ((vol ∘ (,)) ∘ 𝐹) expressed in maps-to notation. (Contributed by Glauco Siliprandi, 3-Mar-2021.)

**Hypotheses**
Ref	Expression
volioofmpt.x	⊢ Ⅎ𝑥𝐹
volioofmpt.f	⊢ (𝜑 → 𝐹:𝐴⟶(ℝ^* × ℝ^*))

**Assertion**
Ref	Expression
volioofmpt	⊢ (𝜑 → ((vol ∘ (,)) ∘ 𝐹) = (𝑥 ∈ 𝐴 ↦ (vol‘((1^st ‘(𝐹‘𝑥))(,)(2^nd ‘(𝐹‘𝑥))))))

Distinct variable groups: 𝑥,𝐴 𝜑,𝑥 Allowed substitution hint: 𝐹(𝑥)

**Proof of Theorem volioofmpt**
Step	Hyp	Ref	Expression
1		nfcv 2903	. . 3 ⊢ Ⅎ𝑥𝐴
2		nfcv 2903	. . . 4 ⊢ Ⅎ𝑥(vol ∘ (,))
3		volioofmpt.x	. . . 4 ⊢ Ⅎ𝑥𝐹
4	2, 3	nfco 5879	. . 3 ⊢ Ⅎ𝑥((vol ∘ (,)) ∘ 𝐹)
5		volioof 45943	. . . . 5 ⊢ (vol ∘ (,)):(ℝ^* × ℝ^*)⟶(0[,]+∞)
6	5	a1i 11	. . . 4 ⊢ (𝜑 → (vol ∘ (,)):(ℝ^* × ℝ^*)⟶(0[,]+∞))
7		volioofmpt.f	. . . 4 ⊢ (𝜑 → 𝐹:𝐴⟶(ℝ^* × ℝ^*))
8		fco 6761	. . . 4 ⊢ (((vol ∘ (,)):(ℝ^* × ℝ^)⟶(0[,]+∞) ∧ 𝐹:𝐴⟶(ℝ^ × ℝ^*)) → ((vol ∘ (,)) ∘ 𝐹):𝐴⟶(0[,]+∞))
9	6, 7, 8	syl2anc 584	. . 3 ⊢ (𝜑 → ((vol ∘ (,)) ∘ 𝐹):𝐴⟶(0[,]+∞))
10	1, 4, 9	feqmptdf 6979	. 2 ⊢ (𝜑 → ((vol ∘ (,)) ∘ 𝐹) = (𝑥 ∈ 𝐴 ↦ (((vol ∘ (,)) ∘ 𝐹)‘𝑥)))
11	7	adantr 480	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐹:𝐴⟶(ℝ^* × ℝ^*))
12		simpr 484	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ 𝐴)
13	11, 12	fvvolioof 45945	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (((vol ∘ (,)) ∘ 𝐹)‘𝑥) = (vol‘((1^st ‘(𝐹‘𝑥))(,)(2^nd ‘(𝐹‘𝑥)))))
14	13	mpteq2dva 5248	. 2 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ (((vol ∘ (,)) ∘ 𝐹)‘𝑥)) = (𝑥 ∈ 𝐴 ↦ (vol‘((1^st ‘(𝐹‘𝑥))(,)(2^nd ‘(𝐹‘𝑥))))))
15	10, 14	eqtrd 2775	1 ⊢ (𝜑 → ((vol ∘ (,)) ∘ 𝐹) = (𝑥 ∈ 𝐴 ↦ (vol‘((1^st ‘(𝐹‘𝑥))(,)(2^nd ‘(𝐹‘𝑥))))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 = wceq 1537 ∈ wcel 2106 Ⅎwnfc 2888 ↦ cmpt 5231 × cxp 5687 ∘ ccom 5693 ⟶wf 6559 ‘cfv 6563 (class class class)co 7431 1^st c1st 8011 2^nd c2nd 8012 0cc0 11153 +∞cpnf 11290 ℝ^*cxr 11292 (,)cioo 13384 [,]cicc 13387 volcvol 25512

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1908 ax-6 1965 ax-7 2005 ax-8 2108 ax-9 2116 ax-10 2139 ax-11 2155 ax-12 2175 ax-ext 2706 ax-rep 5285 ax-sep 5302 ax-nul 5312 ax-pow 5371 ax-pr 5438 ax-un 7754 ax-inf2 9679 ax-cnex 11209 ax-resscn 11210 ax-1cn 11211 ax-icn 11212 ax-addcl 11213 ax-addrcl 11214 ax-mulcl 11215 ax-mulrcl 11216 ax-mulcom 11217 ax-addass 11218 ax-mulass 11219 ax-distr 11220 ax-i2m1 11221 ax-1ne0 11222 ax-1rid 11223 ax-rnegex 11224 ax-rrecex 11225 ax-cnre 11226 ax-pre-lttri 11227 ax-pre-lttrn 11228 ax-pre-ltadd 11229 ax-pre-mulgt0 11230 ax-pre-sup 11231

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1540 df-fal 1550 df-ex 1777 df-nf 1781 df-sb 2063 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2727 df-clel 2814 df-nfc 2890 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3378 df-reu 3379 df-rab 3434 df-v 3480 df-sbc 3792 df-csb 3909 df-dif 3966 df-un 3968 df-in 3970 df-ss 3980 df-pss 3983 df-nul 4340 df-if 4532 df-pw 4607 df-sn 4632 df-pr 4634 df-op 4638 df-uni 4913 df-int 4952 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5583 df-eprel 5589 df-po 5597 df-so 5598 df-fr 5641 df-se 5642 df-we 5643 df-xp 5695 df-rel 5696 df-cnv 5697 df-co 5698 df-dm 5699 df-rn 5700 df-res 5701 df-ima 5702 df-pred 6323 df-ord 6389 df-on 6390 df-lim 6391 df-suc 6392 df-iota 6516 df-fun 6565 df-fn 6566 df-f 6567 df-f1 6568 df-fo 6569 df-f1o 6570 df-fv 6571 df-isom 6572 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-of 7697 df-om 7888 df-1st 8013 df-2nd 8014 df-frecs 8305 df-wrecs 8336 df-recs 8410 df-rdg 8449 df-1o 8505 df-2o 8506 df-er 8744 df-map 8867 df-pm 8868 df-en 8985 df-dom 8986 df-sdom 8987 df-fin 8988 df-sup 9480 df-inf 9481 df-oi 9548 df-dju 9939 df-card 9977 df-pnf 11295 df-mnf 11296 df-xr 11297 df-ltxr 11298 df-le 11299 df-sub 11492 df-neg 11493 df-div 11919 df-nn 12265 df-2 12327 df-3 12328 df-n0 12525 df-z 12612 df-uz 12877 df-q 12989 df-rp 13033 df-xadd 13153 df-ioo 13388 df-ico 13390 df-icc 13391 df-fz 13545 df-fzo 13692 df-fl 13829 df-seq 14040 df-exp 14100 df-hash 14367 df-cj 15135 df-re 15136 df-im 15137 df-sqrt 15271 df-abs 15272 df-clim 15521 df-rlim 15522 df-sum 15720 df-xmet 21375 df-met 21376 df-ovol 25513 df-vol 25514

This theorem is referenced by: ovolval5lem2 46609

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