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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/AP/16/24" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Unpublished appendix, regarding quadrature of lunes and circles by Jean Lobatschevsky</dc:title>
  <dc:description>Lobatschevsky [Lobatschewsky] shares an appendix to an earlier paper on geometry. Contains two pages of figures.
Includes covering letter from Lobatschevsky to the Board of Longitude, dated 28 March 1835.

Subject: Mathematics / Geometry

Written by Lobatschevsky in Sanctpetersbourg [St Petersburg, Russia].</dc:description>
  <dc:date>1835</dc:date>
</rdf:Description>