= Sz.-Nagy's dilation theorem
{wiki=Sz.-Nagy's_dilation_theorem}
Sz.-Nagy's dilation theorem is a result in operator theory, particularly in the study of contraction operators on Hilbert spaces. It provides a framework for understanding certain types of linear operators by representing them in a higher-dimensional space. The primary aim of the theorem is to "dilate" a given operator into a unitary operator, which preserves the properties of the original operator while allowing for a more thorough analysis.
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