Morphism of schemes Created 2026-09-24 Updated 2026-09-24
A morphism of schemes is a morphism of locally ringed spaces. On affine schemes it is contravariantly equivalent to a homomorphism of their coordinate rings.
Scheme Created 2026-09-24 Updated 2026-09-24
A scheme is a locally ringed space covered by open subsets isomorphic to spectra of commutative rings. It retains both the points defined by prime ideals and the local algebra of functions around them.