To teach cleaners and nightwatchmen advanced mathematics (such as adding up without a calculator) seemed pretty wasteful, and apt to breed discontent.

ECONOMIST: Education and the wealth of nations

Consultants working with clients closer to the Beijing or Nairobi research centers, for example, may still tap into Watson in New York for advanced mathematics.

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And that's actually one of the most difficult and most advanced parts of pure mathematics.

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Learners in advanced literacy circles can write and calculate more complex mathematics problems.

UNESCO: Literacy and Community Development Programme (LCDP)