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Try doing some basic maths questions in the Lean Theorem Prover. Functions, real numbers, equivalence relations and groups. Click on README.md and then on "Open in CoCalc with one click".

Project: Xena
Views: 18536
License: APACHE
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import
  algebra.group
  algebra.ring
  algebra.field
  algebra.order
  algebra.ordered_group
  algebra.ordered_ring
  algebra.order_functions
  algebra.group_power
  algebra.module