There is $\mathbb Z^-$, $\mathbb Z^*$, $\mathbb Z^+$. There does not seem to be a notation for negative integers and zero.
1 Answer
If you wrote $\Bbb Z_{\le 0}$, I’m quite sure that you’d be understood, and I have seen this notation.
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Sign up to join this communityIf you wrote $\Bbb Z_{\le 0}$, I’m quite sure that you’d be understood, and I have seen this notation.