Mixed norm n n -widths Academic Article uri icon


  • Recently, the Soviet mathematicians R. Ismagilov [4], E. Gluskin [3] and B. Kashin [5] have obtained some deep and surprising results on n-widths for Sobolev spaces in the mixed norm case. In this note, we will give a new and simpler proof of Gluskin’s result and show its connection with a certain classical combinatorial problem. © 1980 American Mathematical Society.

author list (cited authors)

  • de Boor, C., DeVore, R., & Höllig, K.

citation count

  • 1

publication date

  • April 1980