I cannot figure it out how to assume positive real part of a complex number in Sympy. Example of an Mathematica code: a = InverseFourierTransform[ R/(I omega - lambda) + Conjugate[R]/(I omega - Wolfram Science. Technology-enabling science of the computational universe. Wolfram Natural Language Understanding System. Knowledge-based, broadly deployed natural language. I am trying to find the complex conjugate of E^(- I a e) in Mathematica, but when I enter . Conjugate[Exp[-I a e]] Mathematica assumes both the variables a and e are real. So far I have been able to make mathematica assume that ONE of them is real by writing. Simplify[Conjugate[Exp[-I a e]], a \[Element] Reals] so that a is assumed to be real. ComplexExpand[Conjugate[Denominator[expr1]]] * Denominator[expr1] should be real but it is not so. In the same way mathematica is not performing truthfully for . ComplexExpand[Conjugate[Denominator[expr1]]] * Numerator[expr1] Command Chop is not effective here since I expect high negative exponents in my desired expression. 3) Maple / Mathematica don't seem to need to assume symbols are real by default - and their products are easy to use. Thats my $0.02! Many thanks again for all your work. Mathematica Stack Exchange is a question and answer site for users of Wolfram Mathematica. It only takes a minute to sign up. Sign up to join this community. Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Home Questions Tags Users Unanswered How to assume all variables in my code are reals. Ask Question Asked 4 years, 7 months ago. Active 4 ... Conjugate[z] or z\[Conjugate] gives the complex conjugate of the complex number z. Conjugate by default assumes that all symbolic quantities are potentially complex. This may seem annoying at first, but there is a very good reason for it, and one way to see why is to define your own version of Conjugate, and see it fail.For educational purposes, I do that below. It make Mathematica assume all variables in the contained expression are real. To improve readibility of Conjugate you might want to input it as esc-conj-esc (at the end of the expression, perhaps between parenthesis), so that you only have the superscripted star. Cheers -- Sjoerd On Mar 7, 11:12 am, Joseph Gwinn <joegw... (a)comcast.net> wrote: > I have been using Mathematica 7 to do the ... In mathematica, I'm trying to use Conjugate[] to take the complex conjugate of a function that has imaginary numbers in it, but I want to tell mathematica that the variables are real and positive, so that it can nicely combine terms into, say, x^2 instead of x*x. I've tried doing this using the Assuming[] function, but while it compiles fine it has no effect, the code I'm using is as follows ...
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