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 Feb8 accepted Find the number of ways to obtain a total of $15$ points by throwing $4$ different dice? Feb8 asked Find the number of ways to obtain a total of $15$ points by throwing $4$ different dice? Feb7 accepted What is the need of exponential generating functions on combinatorial problems? Feb7 asked Why do I need the subtraction for this generating function? Feb7 asked What is the connection with $g=1+\frac{1}{g}$ and $G_n= 1+\frac{1}{G_{n-1}}$? Feb7 comment What is the need of exponential generating functions on combinatorial problems? So I suppose that the EGF exist as an analytic object (my professor told me that it's radius of convergence is bigger than the radius of convergence of OGF's), what does these analytic properties tell about the EGF? Does it always tell something fixed or it indicates something different on different applications? Feb5 asked What is so enlightening in the Ferrers diagrams? Feb5 asked How to obtain the chromatic polynomial of $C_5$? Feb4 asked What is the need of exponential generating functions on combinatorial problems? Feb4 asked Is it possible to check if this function is associative without checking all the cases? Feb1 accepted What is $\langle I\rangle$ in this text? Feb1 comment What is $\langle I\rangle$ in this text? Thanks. I didn't think I had to go too much in the beginning to see that. I looked in the previous chapter various times, but didn't find it. Ah, I also didn't mention the book because there are no PDF's of them online (at least I didn't find it). Did you use Amazon's Look Inside? Jan30 comment What is $\langle I\rangle$ in this text? @anorton Ronald Gould: Graph Theory. Jan30 asked What is $\langle I\rangle$ in this text? Jan28 comment Why does list coloring provides a more general setting to discuss the chromatic number? The list colorings. Jan28 comment Why does list coloring provides a more general setting to discuss the chromatic number? But are they always isomorphic one to each other? Jan28 asked Why does list coloring provides a more general setting to discuss the chromatic number? Jan28 comment Confusion about Hajós construction? Thanks. I also read a bit of the Handbook of Graph Theory and discovered that the construction doesn't have to be made on all edges/vertices. It seems one could choose a limited ammount of them to process. Jan28 accepted Confusion about Hajós construction? Jan27 comment What is this binding function? No, it was my mistake. I thought I saw it on the book.