Irrationality, Transcendence and the Circle-Squaring Problem

This publication includes an unabridged and annotated translation of two works by Johann Heinrich Lambert (1728–1777) written in the 1760s:  Vorläufige Kenntnisse für die, so die Quadratur und Rectification des Circuls suchen  and  Mémoire sur quelques propriétés remarquables des quantités transcendentes circulaires et logarithmiques . The translations are accompanied by a contextualised study of each of these works and provide an overview of Lambert’s contributions, showing both