-pencils.
Zaměnitelnost endomorfismů lineárních prostorů
Zero minors of total positive matrices.
Zero-nonzero patterns for nilpotent matrices over finite fields.
Zeros of unilateral quaternionic polynomials.
Zero-term rank preservers of integer matrices
The zero-term rank of a matrix is the minimum number of lines (row or columns) needed to cover all the zero entries of the given matrix. We characterize the linear operators that preserve the zero-term rank of the m × n integer matrices. That is, a linear operator T preserves the zero-term rank if and only if it has the form T(A)=P(A ∘ B)Q, where P, Q are permutation matrices and A ∘ B is the Schur product with B whose entries are all nonzero integers.
Zero-term ranks of real matrices and their preservers
Zero-term rank of a matrix is the minimum number of lines (rows or columns) needed to cover all the zero entries of the given matrix. We characterize the linear operators that preserve zero-term rank of the real matrices. We also obtain combinatorial equivalent condition for the zero-term rank of a real matrix.
Zur besten normalen Approximation komplexer Matrizen in der Euklidischen Norm.
Zur Charakterisierung des Skalarprduktes.
Zur Inversmonotonie diskreter Probleme.
Zur Klassifikation von Bilinearformen und von Isometrie über Körpern.
Zur Linearität verallgemeinerter Modulisometrien
Zur Linearität verallgemeinerter Modulisometrien (Short Communication)
Zur orthogonalen Geometrie über pythagoreischen Körpern.
Zur Theorie der Determinanten.
Zur Theorie der Functionaldeterminanten. Von Carl Neumann in Leipzig
Zur Theorie der quadratischen Formen über formal reellen Körpern.
Zur Theorie der quadratischen Formen über formalreellen Körpern.
Zur Theorie der ternären cubischen Formen
Zur Theorie quadratischer Formen über Körpern der Charakteristik 2.