Spanning tree number
Descriptor Category : topological
c++ entity: functor
Description
Descriptor calculated as the product of the positive A-1 eigenvalues of the
laplacian matrix.
Equation 1:Spanning tree number.
|
Prototype
template <class Molecule>
struct spanning_tree_number : std::unary_function<Molecule,typename Molecule::calc_type> {
result_type operator()(const argument_type& m);
};
Where defined
morpho/cdl/descriptors/topological.hpp
Namespace
morpho::cdl
Inherits from
std::unary_function<Molecule,typename Molecule::calc_type>
Arguments
Argument | Model of |
Molecule |
cdl::molecule |
Example
look at others
Related Items
laplacian matrix
Mohar indices
quasi wiener number
References
- Todeschini, R.; Consonni, V. "Handbook of Molecular Descriptors". Wiley-VCH,
Methods and Principles in Medicinal Chemistry. Volume 11. 2000.
Copyright (c) Vladimir Josef Sykora and Morphochem AG 2003