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Definition df-esum 33026
Description: Define a short-hand for the possibly infinite sum over the extended nonnegative reals. Σ* is relying on the properties of the tsums, developped by Mario Carneiro. (Contributed by Thierry Arnoux, 21-Sep-2016.)
Assertion
Ref Expression
df-esum Σ*𝑘𝐴𝐵 = ((ℝ*𝑠s (0[,]+∞)) tsums (𝑘𝐴𝐵))

Detailed syntax breakdown of Definition df-esum
StepHypRef Expression
1 cA . . 3 class 𝐴
2 cB . . 3 class 𝐵
3 vk . . 3 setvar 𝑘
41, 2, 3cesum 33025 . 2 class Σ*𝑘𝐴𝐵
5 cxrs 17446 . . . . 5 class *𝑠
6 cc0 11110 . . . . . 6 class 0
7 cpnf 11245 . . . . . 6 class +∞
8 cicc 13327 . . . . . 6 class [,]
96, 7, 8co 7409 . . . . 5 class (0[,]+∞)
10 cress 17173 . . . . 5 class s
115, 9, 10co 7409 . . . 4 class (ℝ*𝑠s (0[,]+∞))
123, 1, 2cmpt 5232 . . . 4 class (𝑘𝐴𝐵)
13 ctsu 23630 . . . 4 class tsums
1411, 12, 13co 7409 . . 3 class ((ℝ*𝑠s (0[,]+∞)) tsums (𝑘𝐴𝐵))
1514cuni 4909 . 2 class ((ℝ*𝑠s (0[,]+∞)) tsums (𝑘𝐴𝐵))
164, 15wceq 1542 1 wff Σ*𝑘𝐴𝐵 = ((ℝ*𝑠s (0[,]+∞)) tsums (𝑘𝐴𝐵))
Colors of variables: wff setvar class
This definition is referenced by:  esumex  33027  esumcl  33028  esumeq12dvaf  33029  esumeq2  33034  nfesum1  33038  nfesum2  33039  cbvesum  33040  esumid  33042  esumval  33044  esumf1o  33048  esumsnf  33062  esumss  33070  esumpfinval  33073  esumpfinvalf  33074
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