Mikael

Thanks for your response! I wasn't aware of cabs. However, your example still returns...

I just checked and these "features" are still there in Maxima 5.36.1: (%i7) build_info();...

radcan confuses + and - sometimes

Also, the following expression should perhaps simplify to conjugate(a), which it...

conjugate(z)*z doesn't simplify to abs(z)^2