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[tlaplus] About Action
- From: "hua...@xxxxxxxxx" <huailin@xxxxxxxxx>
- Date: Wed, 21 Apr 2021 20:48:27 -0700 (PDT)
- Ironport-hdrordr: A9a23:nIO5vKCcWbSkcSjlHekm55DYdL4zR+YMi2QD/UZ3VBBTb4ikh9mj9c5x6TbYqhY0HEshl9eJJbWaTRrnn6JdzIENMd6ZLW3bkUSyKoUK1+rf6hjhATC7yulGyax7ebN/A9GYNykese/fwC2VV+kt28OG9qfAv5a4815IQRtxY69tqydVYzzrcHFefwVNCZonGJf03KMumxObZX8VYs6nb0N1PNTrmtujrvLbSC9DLRYi8QGPgzTA0tHHOind9BIfXzRTqI1PzUH11yjw5qCuqJiApyP05ivt64lf8eGO9ud+
For an TLA's action, which is essentially a boolean _expression_, does it ONLY relate to two variables(primed or non-primed)?
For instance, x' + 1 =y. (Please refer to Section 2.3 in Lamport's seminal paper "The Temporal Logic of Actions"-ACM 1993).
Can we have an x' + 1 = y+z as an action? If yes, how we define the "old state" and the new state with the postfix notation? maybe define a super-state to cover (y, z)?
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