DotEqual
 Usage
 \[DotEqual]
Notes
• Alias:  .=. • Infix similarity operator. • x  y is by default interpreted as DotEqual[x, y]. • Used to mean approximately equal, or in some cases, "image of", or "equal by definition". • See Section 3.10.4. • See also: \[TildeEqual] , \[RightArrow] .
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