Construction of dual bases
Construction of dual bases
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DOI:
10.1016/j.cam.2012.12.007
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发表时间:
2013
期刊:
影响因子:
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通讯作者:
Pawel Wozny
中科院分区:
文献类型:
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作者:
Pawel Wozny
Let Bn:={b0,b1,…,bn}(n=0,1,…,N;N∈N) be the sets of linearly independent functions. We give a simple method of construction, the dual functions Dn:={d0(n),d1(n),…,dn(n)}(0≤n≤N) satisfying the following conditions: spanDn=spanBnand <bi,dj(n)>=δij(0≤i,j≤n≤N), where δii=1, δij=0 for i≠j, and <⋅,⋅> is a given inner product. The proposed algorithm allows us to construct all the sets of the dual functions D0,D1,…,DNin the time O(N3), where N is a natural number. Four illustrative examples presenting the possible applications of obtained results are given.