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D.15.25.7 Sfunction
Procedure from library tropicalEllipticCovers.lib (see tropicalEllipticCovers_lib).
- Usage:
- Sfunction(z,k); z poly, k int
- Assume:
- z is a polynomial and k is an integer
- Return:
- poly
- Theory:
- Returns the S-function in the form of (1+X), where X is a taylor series
expansion of the sinh function upto k terms.
Example:
| LIB "tropicalEllipticCovers.lib";
ring R=0,(x,y),dp;
Sfunction(x,3);
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