[sage-support] Re: Free Algebra with symbolic coefficients

2014-09-07 Thread Nils Bruin
On Sunday, September 7, 2014 10:28:02 AM UTC-7, Chris Thron wrote: > > (1) I have expressions like curl*H - c^(-1)*d_t*D, where curl and d_t > express derivatives. In the process of conversion, sage switches the order > and outputs: > > H*curl - D*d_t/c > Are you sure D and d_tand H and curl g

[sage-support] Free Algebra with symbolic coefficients

2014-09-07 Thread Chris Thron
HI, I'm trying to write a program that converts electromagnetic equations from CGS to MKS units. I've run into the following issues: (1) I have expressions like curl*H - c^(-1)*d_t*D, where curl and d_t express derivatives. In the process of conversion, sage switches the order and outputs: H