diff --git a/extra/math/polynomials/authors.txt b/basis/math/polynomials/authors.txt similarity index 100% rename from extra/math/polynomials/authors.txt rename to basis/math/polynomials/authors.txt diff --git a/extra/math/polynomials/polynomials-docs.factor b/basis/math/polynomials/polynomials-docs.factor similarity index 100% rename from extra/math/polynomials/polynomials-docs.factor rename to basis/math/polynomials/polynomials-docs.factor diff --git a/extra/math/polynomials/polynomials-tests.factor b/basis/math/polynomials/polynomials-tests.factor similarity index 100% rename from extra/math/polynomials/polynomials-tests.factor rename to basis/math/polynomials/polynomials-tests.factor diff --git a/extra/math/polynomials/polynomials.factor b/basis/math/polynomials/polynomials.factor similarity index 100% rename from extra/math/polynomials/polynomials.factor rename to basis/math/polynomials/polynomials.factor diff --git a/extra/math/polynomials/summary.txt b/basis/math/polynomials/summary.txt similarity index 100% rename from extra/math/polynomials/summary.txt rename to basis/math/polynomials/summary.txt