Conditions of Cm.-approximability of functions by polynomial solutions of homogeneous elliptic equations of order n on plane compact sets are studied. For positive integers m and n such that m ≥ n - 1, new necessary and sufficient approximability conditions of a topological and metrical nature are obtained.
Original language | English |
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Pages (from-to) | 677-689 |
Number of pages | 13 |
Journal | St. Petersburg Mathematical Journal |
Volume | 24 |
Issue number | 4 |
DOIs | |
State | Published - 2013 |
Externally published | Yes |
ID: 86669546