Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

When I write the asymptotic approximation of a function, does the sign convention matter? i.e. suppose I have (though the formula might not make sense) $$f_n(x)=x^2+\dots-O(n),$$ If my function is actually $\mathbf{-}O(n)$, do I write $-$ or is it convention to write $+$, no matter what?

share|improve this question
add comment

1 Answer

up vote 0 down vote accepted

If you use the absolute value based definition, then it does not matter and normally $+$ is used.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.