5 citations · 5 across the 4 of their papers we have counts for
4 papers
Maps preserving the idempotency of Jordan products
Tatjana Petek, Gordana Radić
Let B(X) be the algebra of all bounded linear operators on a complex Banach space X of dimension at least three. For an arbitrary nonzero complex number t we determine the form of…
Maps on self-adjoint operators preserving some relations related to commutativity
Mahdi Karder, Tatjana Petek
In this paper, we give the complete description of maps on self-adjoint bounded operators on Hilbert space which preserve a triadic relation involving the difference of operators a…
Characterizing Jordan embeddings between block upper-triangular subalgebras via preserving properties
Ilja Gogić, Tatjana Petek, Mateo Tomašević
Let be the algebra of complex matrices. We consider arbitrary subalgebras of which contain the algebra of all upper-triangular matrices (i.e.…
Computation of Normal Forms for Systems with Many Parameters
Tatjana Petek, Valery G. Romanovski
There are two ways to compute Poincaré-Dulac normal forms of systems of ODEs. Under the original approach used by Poincaré the normalizing transformation is explicitly computed. On…