scholarly journals New analytical and geometrical aspects of the algebraic multiplicity

Author(s):  
Julián López-Gómez ◽  
Juan Carlos Sampedro
2001 ◽  
Vol 131 (5) ◽  
pp. 1003-1022 ◽  
Author(s):  
C. Bivià-Ausina ◽  
J. J. Nuño-Ballesteros

We define the deformation multiplicity of a map germ f: (Cn, 0) → (Cp, 0) with respect to a Boardman symbol i of codimension less than or equal to n and establish a geometrical interpretation of this number in terms of the set of Σi points that appear in a generic deformation of f. Moreover, this number is equal to the algebraic multiplicity of f with respect to i when the corresponding associated ring is Cohen-Macaulay. Finally, we study how algebraic multiplicity behaves with weighted homogeneous map germs.


2001 ◽  
Vol 80 (3-4) ◽  
pp. 257-268
Author(s):  
Xue-Zhi Li ◽  
Geni Gupur ◽  
Chun-Lei Tang ◽  
Guang-Tian Zhu

2000 ◽  
Vol 42 (2) ◽  
pp. 224-243
Author(s):  
Rafikul Alam ◽  
Rekha P. Kulkarni ◽  
Balmohan V. Limaye

AbstractThe framework for accelerated spectral refinement for a simple eigenvalue developed in Part I of this paper is employed to treat the general case of a cluster of eigenvalues whose total algebraic multiplicity is finite. Numerical examples concerning the largest and the second largest multiple eigenvalues of an integral operator are given.


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