2 papers
math.FA2019
Cauchy-Riemann equations for free noncommutative functions
S ter Horst, E. M. Klem
In classical complex analysis analyticity of a complex function is equivalent to differentiability of its real and imaginary parts and , respectively, together with the…
math.FA2018
Graphs with sparsity order at most two: The complex case
S. ter Horst, E. M. Klem
The sparsity order of a (simple undirected) graph is the highest possible rank (over or ) of the extremal elements in the matrix cone that consists of po…