#ifndef __GINAC_SERIES_H__
#define __GINAC_SERIES_H__
+#include <ginac/basic.h>
+#include <ginac/expairseq.h>
+
/** This class holds a extended truncated power series (positive and negative
* integer powers). It consists of expression coefficients (only non-zero
* coefficients are stored), an expansion variable and an expansion point.