Generalized arithmetic progression
= Generalized arithmetic progression
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A generalized arithmetic progression of rank $r$ is a set
$$
P=\left\{x_0+n_1v_1+\cdots+n_rv_r:0\leq n_i<L_i\right\}.
$$
It is proper when every parameter tuple in the displayed box represents a different element.
= Generalised arithmetic progression
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