2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/187317The $\hatκ$-deformed extended Galilei Hopf group algebra, ${\rm Fun}_{\hatκ}(\tilde G_{(m)})$, is introduced. It provides an example of a cocycle bicrossproduct structure, and is shown to be the contraction limit of a pseudoextension of the $κ$-Poincaré group algebra. The possibility of obtaining another deformed extended Galilei groups is discussed, including one obtained from a non-standard Poincaré deformation.TeX file. 16 pages. Phyzzx.tex is needed. Two sentences added. To appear in J. Phys AQuantum Algebratext