Where does “Hilbertrum” come from?
Hilbertrum (Swedish) comes from Swedish rum, from Old Norse rúm, from Proto-Germanic rūmą, from Proto-Indo-European rewh₁- — free space.
Hilbertrum (Swedish): Hilbert space
Ancestry of “Hilbertrum”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Swedish | rum | room; part of a building; room; empty, available... |
| 2 | Old Norse | rúm | room; space |
| 3 | Proto-Germanic | rūmą | room, open space |
| 4 | Proto-Indo-European | rewh₁- | free space |