Cramer Gabriel

The Swiss Gabriel Cramer (1704-1752) taught as a professor of mathematics at the Geneva Academy. He was not one of the most important mathematicians, but his main merit was the dissemination of mathematical ideas of his time. He was in contact with leading mathematicians of his time. In addition, he wrote works on the philosophy of law and the state and on the history of mathematics. He also held public offices, participated in military and armament projects of his government, was an advisor in repair work on churches and researched in church archives.

Cramer Daniel - Porträt und Buchcover

From 1746 he was an external member of the Prussian Academy of Sciences. He was intensively engaged in algebra and in 1750 published the book "Introduction à l'analyse des lignes courbes algébriques" on this subject. In this context, he developed a formula for solving systems of linear equations known as "Cramer's Rule" or "Cramer's Cross". This provided the impetus for the development of determinant theory. In winemaking, this method or formula, also known as the blending cross, is used in assembling a cuvée and in awarding the sweet reserve, i.e. sweetening grape must. See also under units of measure.

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Cramer Gabriel

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