Tetration Forum
Is the half iterate of 2sinh(x) analytic near R ? - Printable Version

+- Tetration Forum (https://tetrationforum.org)
+-- Forum: Tetration and Related Topics (https://tetrationforum.org/forumdisplay.php?fid=1)
+--- Forum: Mathematical and General Discussion (https://tetrationforum.org/forumdisplay.php?fid=3)
+--- Thread: Is the half iterate of 2sinh(x) analytic near R ? (/showthread.php?tid=781)



Is the half iterate of 2sinh(x) analytic near R ? - tommy1729 - 03/07/2013

Is the half iterate of 2sinh(x) - expanded from fixpoint 0 - analytic near R ?
And does it satisfy its functional equation ( composition towards 2sinh(x) ) wherever it is analytic ( near R ) ?

I know the taylor series is messed up because we have 2 complex conjugate fixpoints.

However a taylor series can converge outside its radius.

This might be a general idea that we need a general tool for.

regards

tommy1729


RE: Is the half iterate of 2sinh(x) analytic near R ? - tommy1729 - 03/13/2013

Does the taylor series expanded from 0 converge outside its radius ?