More accurately, let $\displaystyle A=\sum_{i=0}^{\infty}A_i$ be a finitely generated graded algebra over say $\mathbb{Q}$ but $\dim A_i=\infty$ for each $i.$ Is it possible?
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$\mathbb Q[x,y]$ with $x$ in degree 0, and $y$ in degree 1. If you want your generators to be in positive degrees, then what you're asking for is impossible. |
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