Is there any measurable redshift dependence on the SN Ia absolute
  magnitude?
  We test the cosmological implications of a varying absolute magnitude of Type
Ia supernovae using the Pantheon compilation, by reconstructing different
phenomenological approaches that could justify a varying absolute magnitude,
but also approaches based on cosmic voids, modified gravity models and a
binning scheme. In all the cases considered in this work, we find good
agreement with the expected values of the standard $\Lambda$CDM model and no
evidence of new physics.
