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8.1: Notación y Terminología Básicas
https://espanol.libretexts.org/Matematicas/Combinatoria_y_Matematicas_Discretas/Combinatoria_Aplicada_(Keller_y_Trotter)/08%3A_Generando_funciones/8.01%3A_Notaci%C3%B3n_y_Terminolog%C3%ADa_B%C3%A1sicas
$F(x) = 1 + x + x^2 + x^3 + x^4 + x^5 + x^6 + \cdot \cdot \cdot$ , $\dfrac{1}{1-x} = 1+x+x^2+x^3+x^4+x^5+x^6+ \cdot \cdot \cdot = \displaystyle \sum_{n=0}^{\infty} x^n$ \((1-x)(1+x+x^2+x^3+x^4+x^5+... $F(x) = 1 + x + x^2 + x^3 + x^4 + x^5 + x^6 + \cdot \cdot \cdot$ , $\dfrac{1}{1-x} = 1+x+x^2+x^3+x^4+x^5+x^6+ \cdot \cdot \cdot = \displaystyle \sum_{n=0}^{\infty} x^n$ $(1-x)(1+x+x^2+x^3+x^4+x^5+x^6+ \cdot \cdot \cdot)$ $(1+x+x^2+x^3+x^4+x^5+x^6+ \cdot \cdot \cdot) - x(1+x+x^2+x^3+x^4+x^5+x^6+ \cdot \cdot \cdot) = 1$ . $(1-x)(1+x+x^2+x^3+x^4+x^5+x^6+ \cdot \cdot \cdot) = 1$ , $(1+x+ \cdot \cdot \cdot + x^n) - (x + x^2 + \cdot \cdot \cdot x^n + x^{n+1})$ .

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