Corank

In mathematics, corank may refer to any of several related concepts, complementary to the concept of the rank of a mathematical object: * The corank…

Papers overview

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2016

We give a signed generalization of Laurent's theorem that characterizes feasible positive semidefinite matrix completion problems…

2012

This is the addendum to the paper "On the Multiplicity Problem and the Isomorphism Problem for the Four Subspace Algebra…

2011

In this paper, we propose one index $i_1(f)-i_2(f)$ which measures how well-behaved a given finitely determined multigerm $f…

2009

Generators for the module of vector fields liftable over corank 1 stable complex analytic maps from an n-manifold to an (n+1…

2008

For any n ≥ 3, we construct a family of finite-dimensional irreducible representations of the braid group 𝔹n. Moreover, we give…

2007

We establish a natural correspondence between the finite order automorphisms of the function singularities X9 and the complex…

2005

Corank one multi-germs $f:(\mathbf{C}^n,S)\to (\mathbf{C}^p,0)$, $n<p$, of $\mathcal A_e$-codimension one are classified. The…

2004

We study germs of n‐parameter families of functions, that is, function‐germs of the type f : Rn × R, 0) → R, 0 defined on the…

1992

We will consider an extension of a direct method due to Griewank and Reddien for the characterization and computation of double…

1986

In this paper, a novel approach is provided to an important but unsolved mathematical problem that occurs in a wide variety of…