Notes for AKT-090922/0:08:20: Difference between revisions

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'''Theorem''' (from last time) If we expand:
'''Theorem''' (from last time) If we expand <math>J(K)(e^x)=\sum{J_n(K)x^n}</math> then <math>J_n</math> is an invariant of type <math>n</math>.
: <math>J(K)(e^x)=\sum{J_n(K)x^n}</math>
then <math>J_n</math> is an invariant of type <math>n</math>.


In fact, this holds if we substitute <math>e^x</math> by any power series that starts with <math>1+x</math> (e.g. <math>1+x</math>, <math>1+sinx</math>).
In fact, this holds if we substitute <math>e^x</math> by any power series that starts with <math>1+x</math> (e.g. <math>1+x</math>, <math>1+sinx</math>).

Latest revision as of 10:15, 14 September 2011

Theorem (from last time) If we expand then is an invariant of type .

In fact, this holds if we substitute by any power series that starts with (e.g. , ).