How to do it with current or previous Physics

ecterrab — Sat, 07 Sep 2013 02:54:26 Z

I just saw your post ... answering two years after is probably irrelevant, but anyway: things have changed since 2011. Using the Physics library up-to-date (you can download it from the the "Maple Physics: Research & Development" updates page), current version:

(1)

Set some commutation rules to see how it works

(2)

The first commutator has a constant in the rhs: in these cases you can now index the operators A and B or give functionality to them as desired and the result will always be the right-hand side of type constant :

(3)

(4)

(5)

In the second commutator, the right-hand side is not constant, so this one works as in previous releases:

(6)

(7)

(8)

The third commutator has functionality in the left-hand and right-hand sides, the same one, so in this case you have more flexibility

(9)

(10)

You can also transform f into a procedure

(11)

(12)

(13)

(14)

The Physics update is developed assuming the Maple 17 library, but the last approach, with in the right-hand side of the commutator followed by defining f as a procedure, will also work in previous Maples.

Download MaplePrimesCommutato.mw

Edgardo S. Cheb-Terrab
Physics, Maplesoft

MaplePrimes - answers and comments on Question, How do I define commutators of operators which are functions in the Maple Physics package?

How to do it with current or previous Physics