This is Google Trends for all published (and scanned) English books in the past 200 years (1800-2000) about the ngrams: Algebra, Arithmetic, Set theory, Calculus, Geometry, Topology, Combinatorics, Number theory and Differential equations.
Click the figure below to see the illustration.
Friday, December 17, 2010
Google Books Ngram Viewer: Algebra, Arithmetic, Geometry, Topology
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