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Table 3 Number of non-zero entries (nnz) in matrices of stochastic Galerkin systems for mass-spring-damper example

From: Stability-preserving model order reduction for linear stochastic Galerkin systems

 

nnz in Ê

 

nnz in Â

 

Untransformed Galerkin system

13,110

(0.01%)

50,958

(0.04%)

Galerkin system in (ii)

30,000,000

(23.1%)

29,999,562

(23.1%)