My question here is about a calculation on a given set A, which has the following elements (1,2,...,k).
Which of the above elements has the set A-1 ?
I have already searched in the bibliography of set theory but unfortunately I didn't find something relative about it.
Best regards, Theo
If $A=\{1,2,\dots,k\}$, then $A-1$ sometimes means $\{a-1: a \in A\}=\{0,1,\dots,k-1\}$. But some authors use $A-1$ to mean $A \setminus \{1\} = \{2,3,\dots,k\}$. Does one of these interpretations make more sense in the context of the paper?