proposition: Lemma isringfun_restriction_section : @isringfun (section_commring U) (section_commring V) restriction_section.
proof: Proof. use make_isrigfun. - exact isaddmonoidfun_restriction_section. - exact ismultmonoidfun_restriction_section. Qed.
imports: UniMath.Algebra.RigsAndRings UniMath.Algebra.RigsAndRings.Ideals UniMath.MoreFoundations.AxiomOfChoice UniMath.MoreFoundations.Subtypes UniMath.Topology.Topology UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.opp_precat UniMath.CategoryTheory.Categories.Commring UniMath.AlgebraicGeometry.Topology UniMath.AlgebraicGeometry.SheavesOfRings