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[tlaplus] Questions about TLA+ formula.

From: 宏黄 <wpkzxp@xxxxxxxxx>
Date: Sun, 24 Apr 2022 19:26:21 -0700 (PDT)

Hi all.

I'm reading the TLA+ hyperbook ，And I met some questions.

In Chapter 17 Temporal Logic Question 17.5

How to prove []p=>p' is not equivalent to any legal TLA+ formula.

and in Chapter 17.4.1 lead to

How to understand F~>false,i think it is nerver true,when F is true,false do not become true

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