Difference between fe.system_to_base_index() and fe.system_to_block_index()?

[Jianan Zhang]

Hi, all,

I am using Nedelec elements to solve the Maxwell equations, which is a complex-valued problem. When search the previous works I found that Ross Kynch was using fe.system_to_block_index() to splitt the system into real/imaginary parts, while QinCe was using fe.system_to_base_index().

Any differences between these two methods? Does either one outperform the other?

Thanks in advance. 

Jianan Zhang

[Wolfgang Bangerth]

Jianan,

These functions do completely different things. You probably want to look up
the glossary entries on "Block (finite element)" to see what a block is. A
base element is explained there as well.

Best
W.

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Wolfgang Bangerth email: bang...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/

[Jianan Zhang]

Hi, professor Bangerth,

Thanks a lot. I will do as you suggested.

Regards

Jianan

在 2017年12月16日星期六 UTC-5上午9:52:30，Wolfgang Bangerth写道：