Google Books Ngram Viewer: Algebra, Arithmetic, Geometry, Topology
This is Google Trends for all
published (and scanned) English books in the past 200 years
(18002000) about the ngrams: Algebra, Arithmetic, Set theory,
Calculus, Geometry, Topology, Combinatorics, Number theory and
Differential equations.
Culturomics and the new Google tool for tracking cultural trends
The field of "culturomics" promises humanities researchers a robust quantitative tool to analyze cultural trends back to the 1500s.
ngram
An ngram is a subsequence of n items from a given sequence. The items in question can be phonemes, syllables, letters, words or base pairs according to the application.

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