allison sweeney

Mon, 04 May 2026 12:11:35 +0000

$ \BbbN \mathbb{N} \symbb{N}$ is exactly the same. The alias name \mathbb for \symbb is for backwards compatibility with older code. Some explanation is in order. unicode-math used to. There is an obsolete amsmath macro \Bbb which was replaced by \mathbb, so \Bbbn would yield \mathbb{n}. It's still in amssymb. But the semicolons here make me wonder if this is some CSS. This question is kind of an extension of a previous question I asked here. The infinite series $$\sum\frac {\mathrm {sgn} (\sin (n))} {n}$$ does converge, but I would like to know if Dirichlet's test ca... \BbbN is an internal command; when you do \mathbb{N} or \symbb{N}, this is mapped to \BbbN automatically. Note that the deprecated form is \Bbb{N}.