Scheme obtained by gluing two other schemes

class sage.schemes.generic.glue.GluedScheme(f, g, check=True)

Bases: sage.schemes.generic.scheme.Scheme

INPUT:

• f - open immersion from a scheme U to a scheme X
• g - open immersion from U to a scheme Y

OUTPUT: The scheme obtained by gluing X and Y along the open set U.

Note

Checking that and are open immersions is not implemented.

gluing_maps()