RT Journal Article T1 Nonsmooth Morse–Sard theorems A1 Azagra Rueda, Daniel A1 Ferrera Cuesta, Juan A1 Gómez Gil, Javier AB We prove that every function f:Rn→R satisfies that the image of the set of critical points at which the function f has Taylor expansions of order n−1 and non-empty subdifferentials of order n is a Lebesgue-null set. As a by-product of our proof, for the proximal subdifferential ∂P, we see that for every lower semicontinuous function f:R2→R the set f({x∈R2:0∈∂Pf(x)}) is L1-null. PB Elsevier SN 0362546X YR 2017 FD 2017 LK https://hdl.handle.net/20.500.14352/17898 UL https://hdl.handle.net/20.500.14352/17898 LA eng DS Docta Complutense RD 19 jul 2025