Is there a way to write that $a≪b$ or $a≫b$ with a single symbol between $a$ and $b$, as in $a∘b$?
Another non-concise way to write this would be $|a-b|≫0$.
Is there a symbol for "very different from"?
0
$\begingroup$
inequality
notation
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0this is a non-math notation. it is a heuristical notatio engeneers and physicists often use, it is a strongly context-dependant notation. in math you have to exactly define what you mean by "very different". – 2017-01-18
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0@Max Oh, I was fooled by the title of [this](http://www.rapidtables.com/math/symbols/Basic_Math_Symbols.htm). – 2017-01-18