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- ...mmutative) [[ring]]; let <math>A[[X]]</math> be the ring of [[formal power series]] over <math>A</math>. For <math>P \in A[[X]]</math>, let <math>I(P)</math ...h <math>A = \mathbb{Z}</math>, and <math>P</math> and <math>Q</math> power series with finitely many nonzero coefficients.3 KB (488 words) - 19:37, 28 September 2024
- ==Formal Definition== At this point, our formal definition of a polynomial may seem unrelated to our intuitive notion of a12 KB (2,010 words) - 23:10, 2 August 2020
- <!-- I am think it doesn't work for rings of formal power series, either, but I don't have time to prove it this evening.-->4 KB (617 words) - 18:59, 23 April 2023
- The <math>32</math>nd power of each of these roots is just <math>1</math>, hence the sum of the <math>3 Expanding all the fractions as geometric series, we get8 KB (1,348 words) - 08:44, 25 June 2022