I am using CAMB's Python wrapper, and I need to adjust the value of the dark energy density parameter, assuming it is in the form of a cosmological constant ([math]). I have two questions:

1) Is the value of [math] deduced using the following formula?

[math]

If not,

**what is the formula to deduce [math] from CAMB inputs**? Here, [math] are the density parameters of CDM, baryons, and massive neutrinos, respectively. [math]. Also, [math].

2) Let's say I would like to run CAMB with the following parameter combinations:

- Flat Universe, with a specific [math] value, say 0.34.
- Curved Universe, with the same density parameters as [math]CDM but a non-zero curvature.
- Curved Universe, with no cosmological constant ([math]) and a non-zero curvature.

**ombh2**,

**omch2**,

**omnuh2**,

**omk**. Are there any other arguments that need to be set?

Thank you very much for your time and attention! 💐