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Create a power series from a polynomial. The variables in a are the variables in the polynomial.
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Create a power series from a procedure. The variables in b are specified manually.
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bproc := proc(d) local s; s := 2*x + y; return expand(s^d); end proc:
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Create a power series from a procedure. The variables in c are the variables occurring in the analytic expression.
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If we define a power series as times its inverse, then the power series is equal to 1, so no variables actually occur in it. However, the Variables command will still return the variable occurring in .
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Create a univariate polynomial over power series. The variables in u are the variables in its coefficients, together with the main variable.
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Create a univariate polynomial over Puiseux series from a list of Puiseux series.
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We verify the variables of g.
Finally, we define a Puiseux series s and verify its variables.
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| (13) |