Projection of the space (π) on its subspace (πβ)
Open Access
- 1 January 1941
- journal article
- Published byΒ American Mathematical Society (AMS)Β inΒ Bulletin of the American Mathematical Society
- Vol.Β 47 Β (12) , 938-947
- https://doi.org/10.1090/s0002-9904-1941-07593-2