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Hi there,
Let [itex]X[/itex] be a Hilbert (Banach) space, and spanned by a set [itex]S[/itex], say.
Let [itex]A[/itex] be linear bounded operator on X into itself.
Suppose that the operator is well known on S, that is
[itex]Aa_i=b_i[/itex] for all [itex]a_i\in S[/itex].
First, is this operator unique on X? if yes, can we find [itex]Aa[/itex], for general element a in X, in terms of [itex]b_i[/itex].
Thanks in advance
Let [itex]X[/itex] be a Hilbert (Banach) space, and spanned by a set [itex]S[/itex], say.
Let [itex]A[/itex] be linear bounded operator on X into itself.
Suppose that the operator is well known on S, that is
[itex]Aa_i=b_i[/itex] for all [itex]a_i\in S[/itex].
First, is this operator unique on X? if yes, can we find [itex]Aa[/itex], for general element a in X, in terms of [itex]b_i[/itex].
Thanks in advance