Comments on: An Inversion Theorem for Formal Power Series http://www.tangentspace.net/cz/archives/2005/01/an-inversion-theorem-for-formal-power-series/ somewhere near the beginning. Tue, 09 Mar 2010 11:23:12 +0000 http://wordpress.org/?v=2.9 hourly 1 By: Anonymous http://www.tangentspace.net/cz/archives/2005/01/an-inversion-theorem-for-formal-power-series/comment-page-1/#comment-58493 Anonymous Sat, 09 Sep 2006 04:49:18 +0000 http://www.tangentspace.net/cz/archives/2005/01/an-inversion-theorem-for-formal-power-series#comment-58493 If B(C(t))=t then A(B(C(t)))=A(t)!! and if A(B(t))=t then C(A(B(t)))=C(t)!! Where did you see this right-left hand stuff. No such thing, in the algebra of Formal Polynomials. This is not matrix multiplication. If B(C(t))=t then A(B(C(t)))=A(t)!!
and if A(B(t))=t then C(A(B(t)))=C(t)!!

Where did you see this right-left hand stuff.
No such thing, in the algebra of Formal Polynomials.
This is not matrix multiplication.

]]> By: tpc http://www.tangentspace.net/cz/archives/2005/01/an-inversion-theorem-for-formal-power-series/comment-page-1/#comment-417 tpc Fri, 14 Jan 2005 03:47:39 +0000 http://www.tangentspace.net/cz/archives/2005/01/an-inversion-theorem-for-formal-power-series#comment-417 Working out the first few terms [tex]A(B(t)) = a_0 + a_1 b_1 t + a_1 b_2 t^2 + a_2 b_1^2 t^2 + O(t^3)[\tex] so it doesn't look associative Working out the first few terms
[tex]A(B(t)) = a_0 + a_1 b_1 t + a_1 b_2 t^2 + a_2 b_1^2 t^2 + O(t^3)[\tex]
so it doesn’t look associative

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