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Related theorems GIF version |
| Description: Value of multiplication on positive reals. |
| Ref | Expression |
|---|---|
| mpv | ⊢ ((A ∈ P ∧ B ∈ P) → (A ·P B) = {x∣∃y∃z((y ∈ A ∧ z ∈ B) ∧ x = (y ·Q z))}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-mp 3883 | . 2 ⊢ ·P = {〈〈w, v〉, u〉∣((w ∈ P ∧ v ∈ P) ∧ u = {f∣∃g ∈ w ∃h ∈ v f = (g ·Q h)})} | |
| 2 | 1 | genpv 3896 | 1 ⊢ ((A ∈ P ∧ B ∈ P) → (A ·P B) = {x∣∃y∃z((y ∈ A ∧ z ∈ B) ∧ x = (y ·Q z))}) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ∧ wa 196 ∃wex 678 {cab 1090 = wceq 1091 ∈ wcel 1092 (class class class)co 3001 ·Q cmq 3776 Pcnp 3779 ·P cmp 3782 |
| This theorem is referenced by: mulcompr 3919 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-un 1076 ax-pow 1077 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-3an 583 df-ex 679 df-sb 853 df-eu 1009 df-mo 1010 df-clab 1093 df-cleq 1097 df-clel 1099 df-ral 1205 df-rex 1206 df-rab 1208 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-op 1815 df-uni 1920 df-br 2063 df-opab 2098 df-id 2125 df-xp 2424 df-rel 2425 df-cnv 2426 df-co 2427 df-dm 2428 df-rn 2429 df-res 2430 df-ima 2431 df-fun 2432 df-fv 2438 df-opr 3003 df-oprab 3004 df-mp 3883 |