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math.AP2026
On Spectral multiplier theorem for sub-Laplacians with drift on Métivier groups
Nishta Garg, Joydwip Singh
In this paper, we prove a spectral multiplier theorem for sub-Laplacians with drift on Métivier groups. We improve the result of [Martini, Ottazzi and Vallarino, Rev. Mat. Iberoam,…
math.AP2026
Stein's square function associated with the Bochner-Riesz means on Métivier groups and its applications
Joydwip Singh
In this paper, we study the -boundedness of Stein's square function associated with the sub-Laplacian on Métivier group . A key…