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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Let A be entire. Suppose that there exists an unbounded quasidisk D such that A is sufficiently small in D. We prove that A is sufficiently small in D. We prove that then any nontrivial solution to y″+Ay=0 has at most one zero in D. We show that if A=Q exp P where P and Q are polynomials, one can usually take D to be an angle of opening π/n where n is the degree of P

Schwarzian derivatives and zeros of solutions to second order linear differential equations