associative law

noun

: a law indicating immateriality in the grouping of variables
specifically : any law of the form (φRχ)Rψ=φRRψ) where φ, χ, ψ are variables and R a dyadic operator [as (a + b) + c=a + (b + c) in arithmetic or (pvq)vr.≡. p v(qvr) in the propositional calculus]

called also principle of association

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“Associative law.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/associative%20law. Accessed 23 Mar. 2023.

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