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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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/-
Copyright (c) 2014 Jeremy Avigad. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Jeremy Avigad, Leonardo de Moura, Michael Howes

Various multiplicative and additive structures.
-/

import algebra.group.to_additive
import algebra.group.basic
import algebra.group.units
import algebra.group.hom
import algebra.group.type_tags
import algebra.group.free_monoid
import algebra.group.conj
import algebra.group.with_one
import algebra.group.anti_hom
import algebra.group.units_hom