Re: Q: tensor field operators inc, div, def
- To: mathgroup at smc.vnet.net
- Subject: [mg2066] Re: Q: tensor field operators inc, div, def
- From: "John M. Lee" <lee at math.washington.edu>
- Date: Sat, 23 Sep 1995 20:34:53 -0400
- Organization: University of Washington Department of Mathematics
u7f01bf at sun2.lrz-muenchen.de () wrote: > >Who knows how to define the opreators def(u), inc(b), >div(b), u beeing a vector field, b beeing a tensor field? > >inc b = \nabla x b x \nabla or > >(inc b)_{nm} = e_{mki} e_{nlj} d_{k} d_{l} b_{ij},e_{mki} beeing > >the totally antisymmetric unit tensor. > > >div a_{ij} = d_{i} a{ij} > >def u_{i} = d_{j} u_{i} > >I tried to copy the <<Calculus`VectorAnalysis` syntax, but >it didn't work. > >Thanks in advance > >Alexander Unzicker > >sascha at space.imp.med.uni-muenchen.de >u7f01bf at sunmail.lrz-muenchen.de You might try my Ricci tensor analysis package. See http://www.math.washington.edu/~lee/Ricci/ for more information. Jack Lee ============================================================================== John M. Lee WWW: http://www.math.washington.edu/~lee/ Univ of Washington Math Dept E-mail: lee at math.washington.edu Box 354350 Phone: 206-543-1735 Seattle, WA 98195-4350 Fax: 206-543-0397 ==============================================================================