Re: [tlaplus] Some questions from a beginner

[Markus Kuppe <tlaplus-google-group@xxxxxxxxxxx>]

temp' \in -273..-264


{-273..-264} equals a *set containing the set* of numbers -237 to -264.

Markus


> On Oct 3, 2022, at 10:07 AM, Xindi Liu <xindi@xxxxxx> wrote:
> 
> Hi.
> How to specify that a variable can non deterministicly change to one value in a set? Assume that I have a tempetarue sensor that detects the temperature, that value should be any value in the set {-273..-264} in each state.
> I tried many combinations such like 
> next_temp == temp \in {-273..-264}
> next_temp == temp' \in {-273..-264}
> But the result is either that the variable is undefined or I am comparing an integer with a set (I specified the initial value of it).
> 
> Thank you very much!

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