Morphochem

Spanning tree number

CDL descriptor
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

ArgumentModel of
Molecule cdl::molecule

Example

look at others

Related Items

laplacian matrix
Mohar indices
quasi wiener number

References

  1. 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