'Atomics Functions of CVXPY in Pyomo

I am trying to translate a problem modeled in CVXPY into Pyomo. Currently I have the doubt of how the atoms functions can be carried out in pyomo, in particular the cp.pos function I used it to declare a variable:

variable_3 = cp.pos(variable_2-variable_1)

So that the result is positive numbers of the difference

Is there a way to do this in pyomo?



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