English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

In this paper, we systematically study a class of essentially normaloperators by using the geometry method from the Cowen-Douglas theory and provea Brown-Douglas-Fillmore theorem in the Cowen-Douglas theory. More precisely,the Chern polynomials and the second fundamental forms are the similarityinvariants (in the sense of Herrero) of this class of essentially normaloperators.

Similarity Invariants of Essentially normal Cowen-Douglas Operators and Chern Polynomials