|  Résume | We will discuss recent results concerning bubbling analysis and index estimates for minimal hypersurfaces  in Riemannian manifolds. 
 The existence theory guarantees that minimal hypersurfaces exist (Almgren, Pitts, Schoen-Simon) and in most cases that they exist in abundance (Marques-Neves, Marques-Neves-Irie). 
 The results presented here are geared towards understanding the relationship between the Morse index and other geometric-analytic qualities of minimal hypersurfaces (topology, diffeomorphism type, total curvature). 
 This will contain joint works with Ambrozio, Carlotto and Buzano. 
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