Scales
M. Helfter, Mathematische Zeitschrift 310 (2025).

Sets with arbitrary Hausdorff and packing scales in infinite dimensional Banach spaces
M. Helfter, Journal of Fractal Geometry (2025).

Every diffeomorphism is a total renormalization of a close to identity map
P. Berger, N. Gourmelon, M. Helfter, Inventiones Mathematicae 239 (2024) 431–468.