Kim, H. K.; Kwon, K. H.; Littlejohn, L. L.; Yoon, G. J. Diagonalizability and symmetrizability of Sobolev-type bilinear forms: a combinatorial approach. (English) Zbl 1300.05321 Linear Algebra Appl. 460, 111-124 (2014). MSC: 05E10 11E39 30E05 33C45 PDFBibTeX XMLCite \textit{H. K. Kim} et al., Linear Algebra Appl. 460, 111--124 (2014; Zbl 1300.05321) Full Text: DOI
Kwon, K. H.; Littlejohn, Lance L.; Yoon, G. J. Ghost matrices and a characterization of symmetric Sobolev bilinear forms. (English) Zbl 1214.15016 Linear Algebra Appl. 431, No. 1-2, 104-119 (2009). MSC: 15A63 05A15 35A25 PDFBibTeX XMLCite \textit{K. H. Kwon} et al., Linear Algebra Appl. 431, No. 1--2, 104--119 (2009; Zbl 1214.15016) Full Text: DOI