NestedLessLess \[NestedLessLess]
Infix ordering operator. x
y is by default interpreted as NestedLessLess[x,y]. Used to denote "much less than". Occasionally used in measure theory to denote "absolutely continuous with respect to". See The Mathematica Book: Section 3.10.4. See also: \[LessLess], \[NotLessLess], \[NotNestedLessLess].
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\[NestedLessLess]
