continuing the work k. c. das, i. gutman, b. furtula, on second geometric-arithmetic indexof graphs, iran. j. math chem., 1(2) (2010) 17-28, in this paper we present lower and upperbounds on the third geometric-arithmetic index ga3 and characterize the extremal graphs.moreover, we give nordhaus-gaddum-type result for ga3.

in early islamic era, architecture in khorasan was followed the common features of early islamic architecture style; such as simplicity in construction and ornament. in the later periods, especially in seljuq dynasty, the application of brick, stucco, tiling and inscription had been used more in architectural ornament. then, in the short period under the khwarizmshahid dynasty in khorasan, two-...

‎in this paper first we define the morphism between geometric spaces in two different types‎. ‎we construct two categories of $uu$ and $l$ from geometric spaces then investigate some properties of the two categories‎, ‎for instance $uu$ is topological‎. ‎the relation between hypergroups and geometric spaces is studied‎. ‎by constructing the category $qh$ of $h_{v}$-groups we answer the question...

Most of the geometric information in a scene is captured by local coordinate frames oriented according to local geometric features. In polyhedral worlds these features are faces, vertices and edges. Such features lead naturally to parallel algorithms for building such a scene description from stereo input that are insensitive to noise and occlusion. This representation can be used for object lo...

This paper describes an approach for learning object descriptions as combinations of simple features using labeled still images. The contribution of this paper is a new method for constructing geometric relations of simple features with the LPBoost algorithm. A full search for relevant geometric relations between simple features is rather impossible because of the computation time required. We ...

In automated face recognition, a human face can be described by several features, but very few of them are used in combination to improve discrimination ability. This paper demonstrates how different feature sets can be used to enhance discrimination for the purpose of face recognition. We have used geometrical features and Gabor features in combination for face recognition. The geometrical fea...

This paper presents a novel method to recognize current location of a mobile robot from input stereo images with visual and geometric features. We extract structural planes from 3D depth data by using SLIC (Simple Linear Iterative Clustering) based superpixel and RANSAC algorithm. The experimental results show that the proposed method using visual features and their geometric relationship provi...

We propose a new class of unconventional geometric gates involving nonzero dynamic phases, and elucidate that geometric quantum computation can be implemented by using these gates. Comparing with the conventional geometric gate operation, in which the dynamic phase shift must be removed or avoided, the gates proposed here may be operated more simply. We illustrate in detail that unconventional ...