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

We give three derivations of Polya's approximation for the expected range ofa simple random walk in one dimension. This result allows for an estimation ofthe volatility of a financial instrument from the difference between the highand low prices, or, equivalently, for an estimation of pi from the ratio of thevolatility to the difference between high and low prices.

Approximately pi proofs that the stock market can approximate pi