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/

Global: Zendy Plus annual

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

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In this paper, we introduce a class of singular integral operators whichgeneralize Calder\'on-Zygmund operators to the more general case, where the setof singular points of the kernel need not to be the diagonal, but instead, itcan be a general hyper curve. We show that such operators have similarproperties as ordinary Calder\'on-Zygmund operators. In particular, we provethat they are of weak-type $(1, 1)$ and strong type $(p,p)$ for $1<p<\infty$.

Calder\'{o}n-Zygmund Operators with Non-diagonal Singularity