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17 Terminal category
 17.1 GAP Categories
 17.2 Constructors
 17.3 Attributes

17 Terminal category

17.1 GAP Categories

17.1-1 IsCapTerminalCategoryWithSingleObject
‣ IsCapTerminalCategoryWithSingleObject( T )( filter )

Returns: true or false

The GAP type of a terminal category with a single object.

17.1-2 IsObjectInCapTerminalCategoryWithSingleObject
‣ IsObjectInCapTerminalCategoryWithSingleObject( T )( filter )

Returns: true or false

The GAP type of an object in a terminal category with a single object.

17.1-3 IsMorphismInCapTerminalCategoryWithSingleObject
‣ IsMorphismInCapTerminalCategoryWithSingleObject( T )( filter )

Returns: true or false

The GAP type of a morphism in a terminal category with a single object.

17.1-4 IsCapTerminalCategoryWithMultipleObjects
‣ IsCapTerminalCategoryWithMultipleObjects( T )( filter )

Returns: true or false

The GAP type of a terminal category with multiple objects.

17.1-5 IsObjectInCapTerminalCategoryWithMultipleObjects
‣ IsObjectInCapTerminalCategoryWithMultipleObjects( T )( filter )

Returns: true or false

The GAP type of an object in a terminal category with multiple objects.

17.1-6 IsMorphismInCapTerminalCategoryWithMultipleObjects
‣ IsMorphismInCapTerminalCategoryWithMultipleObjects( T )( filter )

Returns: true or false

The GAP type of a morphism in a terminal category with multiple objects.

17.1-7 IsTerminalCategory
‣ IsTerminalCategory( C )( property )

Returns: true or false

The property of the category C being terminal.

17.2 Constructors

17.2-1 TerminalCategoryWithSingleObject
‣ TerminalCategoryWithSingleObject( arg )( function )

Construct a terminal category with a single object.

17.2-2 TerminalCategoryWithMultipleObjects
‣ TerminalCategoryWithMultipleObjects( arg )( function )

Construct a terminal category with multiple objects.

17.2-3 CAP_INTERNAL_CONSTRUCTOR_FOR_TERMINAL_CATEGORY
‣ CAP_INTERNAL_CONSTRUCTOR_FOR_TERMINAL_CATEGORY( options )( function )

Returns: a CAP category

This function takes a record of options suited for CategoryConstructor. It makes common adjustments for TerminalCategoryWithSingleObject and TerminalCategoryWithMultipleObjects to the list of operations to install and the categorical properties of the given record, before passing it on to CategoryConstructor.

17.3 Attributes

17.3-1 TerminalCategoryWithSingleObjectUniqueObject
‣ TerminalCategoryWithSingleObjectUniqueObject( arg )( attribute )

Returns: a CAP object

The unique object in a terminal category with a single object.

17.3-2 TerminalCategoryWithSingleObjectUniqueMorphism
‣ TerminalCategoryWithSingleObjectUniqueMorphism( arg )( attribute )

Returns: a CAP morphism

The unique morphism in a terminal category with a single object.

17.3-3 FunctorFromTerminalCategory
‣ FunctorFromTerminalCategory( object )( attribute )

Returns: a CAP functor

A functor from AsCapCategory( TerminalObject( CapCat ) ) mapping the unique object to object.

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