Should I send an addendum/erratum due to single error in sign? I was reading my own paper published in 2018 and I noticed that in one of the sections I wrote &quot;&lt;&quot; instead &quot;&gt;&quot; to indicate greater than or greater value, although the preceding sentences is clearly stating/suggesting that it should be &quot;&gt;&quot; greater. I was wondering if I should write or send an erratum to the journal editor?
No.
I would guess almost every mathematics paper (mine included) has at least one typo of this magnitude.
As you indicate, readers can easily correct the typo for themselves, and some might even do it subconsciously.