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Reference.org
Normal form (abstract rewriting)
open-in-new
<p>In <a href="/facts/Abstract_rewriting/FNIYHu2k">abstract rewriting</a>, an object is in normal form if it cannot be rewritten any further, i.e. it is irreducible. Depending on the rewriting system, an object may rewrite to several normal forms or none at all. Many properties of rewriting systems relate to normal forms. </p>