Hello
i am using maple 2023 and the physics package and have the following question:
I want to define a gauge-  plus coordinate covariant derivative i.e.
assuming i,j,k are SO(3) indices and greek indices describe 4-dim space-time (not necessary flat)
i need the following derivative:

D_sigma F_i _rho _lambda = nabla_sigma F_i _rho _lambda + epsilon_i ^j ^k  A_j_sigma  F_k~rho~lambda
with _ meaning lower indices and ^ upper indices and nabla the convenient coordinate covariant derivative of general relativity.
F is a tensor objekt with 2 space time indices and 1 so(3) indices (e.g. Yang Mills field strength) and A is the so(3)gauge potential
How can i define this Differentialoperator with the physics package.
I.e. i want to work with SO(3) Yang-Mills Fields in curved space time and need this generalized Differentialoperator
thanks for helping. I hope its clear from this ascii text in the screen
regards Michael

Hello

yesterday i downloaded Maple13 64 bit for Linux. (OpenSuse 11.1 64bit)

When i try to print it does not work. No dialog menü pops up where i can
select the printer or change other printer-specific things

If i try with Maple12, which i have installed parallel in a seperate directory, Maple12 does print indeed.
 

Does anybody have an idea ? Besides printing all is working good on Maple13

Thanks in advance

Michael

Hello

today i downloaded the maple12 student version (32 bit) for Linux.
I have openSuSe 10.3 with kernel 2.6.24 and its 64bit Linux. In the past i
worked with 32bit Maple 10 and 11 without a problem.
But now after starting maple12 (the pure asci console maple) it
terminates with the message: