most citedNatural Isomorphism from a Linear Map's Image to Complement of Nullspace

2 citations · 2 across the 3 of their papers we have counts for

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3 papers

math.FA2011★ 2 cited

Natural Isomorphism from a Linear Map's Image to Complement of Nullspace

H. N. Friedel

There is a natural isomorphism from image to complement of nullspace, for a bounded linear map from a real Banach space onto a closed subspace of a real Hilbert space. This general…

math.FA2011

Self-Adjoint Extension of Symmetric Maps

H. N. Friedel

A densely-defined symmetric linear map from/to a real Hilbert space extends to a self-adjoint map. Extension is expressed via Riesz representation. For a case including Friedrichs…

math.FA2010

Short Proof of Dirichlet's Principle

H. N. Friedel

A standard Hilbert-space proof of Dirichlet's principle is simplified, using an observation that a certain form of min-problem has unique solution, at a specified point. This solve…