A new generalized version of Korovkin-type approximation theorem

This article is regarding certain new forms of Korovkin-type theorems associated with multiple testing functions proved through mu-deferred ideal statistical measurable convergence under integral. In addition, we introduce different versions of mu-deferred ideal statistical convergence e.g., convergence via mean, convergence via measure, and convergence via Lebesgue measure under integral. We also established fundamental relations between these convergences along with examples.