PBR¶

class PBR¶

Class for partitioned binary relations (PBR).

Partitioned binary relations (PBRs) are a generalisation of bipartitions, which were introduced by Martin and Mazorchuk.

Member types¶

`initializer_list_type`	Type of constructor argument.
`vector_type`	Type of constructor argument.

`operator<<(std::ostream &,PBR const &)`	Insertion operator.
`operator<<(std::ostringstream &,PBR const &)`	Insertion operator.

`PBR() = delete`	Deleted.
`PBR(PBR &&) = default`	Default move constructor.
`PBR(PBR const &) = default`	Default copy constructor.
`PBR(initializer_list_type<int32_t>,initializer_list_type<int32_t>)`	Construct from adjancencies `1` to `n` and `-1` to `-n`.
`PBR(initializer_list_type<uint32_t>)`	Construct from adjacencies `0` to `2n - 1`.
`PBR(size_t)`	Construct empty `PBR` of given `degree` .
`PBR(vector_type<int32_t>,vector_type<int32_t>)`	Construct from adjancencies `1` to `n` and `-1` to `-n`.
`PBR(vector_type<uint32_t>)`	Construct from adjacencies `0` to `2n - 1`.
`operator=(PBR &&) = default`	Default move assignment operator.
`operator=(PBR const &) = default`	Default copy assignment operator.

`identity() const`	Returns the identity `PBR` with degree `degree()` .
`identity(size_t)`	Returns the identity `PBR` with specified degree.
`make(T...)`	Construct and validate.
`make(initializer_list_type<int32_t>,initializer_list_type<int32_t>)`	Construct and validate.
`make(initializer_list_type<uint32_t>)`	Construct and validate.

`degree() const noexcept`	Returns the degree of a `PBR` .
`hash_value() const`	Returns a hash value for a `PBR` .
`operator<(PBR const &) const`	Compare.
`operator==(PBR const &) const`	Check equality.
`operator[](size_t)`	Returns a reference to the points adjacent to a given point.
`operator[](size_t) const`	Returns a const reference to the points adjacent to a given point.
`product_inplace(PBR const &,PBR const &,size_t)`	Multiply two `PBR` objects and store the product in `this`.