powseries
compose
composition of formal power series
Calling Sequence
Parameters
Description
Examples
compose(a, b)
a, b
-
formal power series
The function compose(a, b) computes and returns the formal power series ab, the composition of a and b. This power series is: a0+a1b+a2b2+a3b3+....
Note that b0 must be 0 to ensure that the composition is well defined. Otherwise, compose returns an error message.
The command with(powseries,compose) allows the use of the abbreviated form of this command.
withpowseries:
powcreatetn=tn−1n,t0=1:
powcreatevn=vn−12,v0=0,v1=1:
s≔composet,v:
tpsforms,x
1+x+x2+1112x3+1924x4+157240x5+Ox6
See Also
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