  In the earlier works, the electronic structure of the graphitic nanocone for
the long distance from the tip was investigated. Here, we investigate the
behaviour of the given nanostructure near the tip where in our approach
hybridizations of pi-orbitals need to be included. In this case, the curvature
dependence of pi-orbital energy has to be imposed into the model. For this
purpose, we use an approximation valid for small values of the corresponding
parameters. We consider different numbers of the pentagonal defects in the tip.
This localization of the electrons on the nanocone tip could be used as a real
application in the electron microscopes.
