Is this equation at all sensical?

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    equation Time Variables
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Discussion Overview

The discussion revolves around the interpretation and sensibility of a specific logical equation involving variables and operators. Participants explore its potential meanings and contexts, particularly in relation to logic and programming, without reaching a consensus on its utility or origin.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant expresses uncertainty about the equation's provenance and usefulness, noting the lack of specified variables.
  • Another participant suggests that the symbols may be interpreted as logical operators and recommends consulting the mathematics forum for more context.
  • A third participant analyzes the equation, proposing that it could represent a logical function where certain conditions affect the truth value of T based on H's state at different times.
  • A fourth participant speculates that the equation resembles input code for a theorem prover, specifically referencing the Boyer-Moore Theorem Prover and its relation to ACL2, a programming language for modeling computer systems.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the equation's meaning or application, with multiple interpretations and contexts proposed without resolution.

Contextual Notes

The discussion highlights the ambiguity of the equation due to unspecified variables and the varying interpretations of logical operators, which may depend on specific mathematical or programming contexts.

Who May Find This Useful

Individuals interested in logic, programming languages, or formal methods in computer science may find the discussion relevant.

DaveC426913
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TL;DR
This looks like nonsense, or at least nothing meaningful.
(Yes, I'm guilty of passing along something incomplete and of utterly unknown provenance that someone saw somewhere and didn't understand. I feel dirty.)


∀t(T(x,t)⟹(¬H(x,t)∨H(x,t+Δt)))

Certainly, without specifying any of the variables, it's got to be useless. At least we can assume t and Δt refer to time/delta time - which is my rationale for posting here in the physics subforum)

Chat GPT made a broad guess but couldn't make heads or tails of it either. Don't judge me.
 
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I would normally interpret those symbols as logical operators, so you might be better asking in the relevant maths forum. Difficult to tell without context, though.
 
∀t(T(x,t)⟹(¬H(x,t)∨H(x,t+Δt)))
For all t, T(x,t) implies ( NOT( H(x,t) ) OR H(x,t+Δt) )
T(x,t) is FALSE if H(x,t) was TRUE, and H(x,t+Δt) is FALSE.
T(x,t) is FALSE when H(x,t) transitions to FALSE in next sample.
A negative edge in H causes T to go low for one cycle.

Maybe it is from a formal HDL used to describe logic functions.
 
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It looks a bit like input code for a Boyer-Moore Theorem Prover.
Example here: https://en.wikipedia.org/wiki/Nqthm#Theorem_formulation
"(IMPLIES (AND (NOT (ZEROP X)) (p (SUB1 X) Z))"

ACL2 or "A Computational Logic for Applicative Common Lisp", an applicative (side-effect free) variant of Common LISP. ACL2 is both a programming language which can model computer systems, and a tool to help proving properties of those models.
 
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