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MR 2267033 [Mol08] Lajos Moln´ ar,Maps on then-dimensional subspaces of a Hilbert space preserving principal angles, Proc · 2008

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Linear preservers of rank k projections

math.FA · 2025-12-11 · unverdicted · novelty 7.0

Linear maps preserving rank-k projections on finite-rank self-adjoint operators are characterized, with auxiliary results on hermitian matrices and maps to finite-rank projections.

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  • Linear preservers of rank k projections math.FA · 2025-12-11 · unverdicted · none · ref 3

    Linear maps preserving rank-k projections on finite-rank self-adjoint operators are characterized, with auxiliary results on hermitian matrices and maps to finite-rank projections.