SetsWithPartialMaps#
- class sage.categories.sets_with_partial_maps.SetsWithPartialMaps#
Bases:
Category_singleton
The category whose objects are sets and whose morphisms are maps that are allowed to raise a
ValueError
on some inputs.This category is equivalent to the category of pointed sets, via the equivalence sending an object X to X union {error}, a morphism f to the morphism of pointed sets that sends x to f(x) if f does not raise an error on x, or to error if it does.
EXAMPLES:
sage: SetsWithPartialMaps() Category of sets with partial maps sage: SetsWithPartialMaps().super_categories() [Category of objects]
- super_categories()#
EXAMPLES:
sage: SetsWithPartialMaps().super_categories() [Category of objects]