Ultra Ethernet's Design Principles and Architectural Innovations. - Torsten Hoefler; Karen Schramm; Eric Spada; Keith D. Underwood; Cedell Alexander; Bob Alverson; Paul Bottorff; Adrian M. Caulfield; Mark Handley; Cathy Huang; Costin Raiciu; Abdul Kabbani; et al. (CoRR, 2025)