an algebraic construction for constant dimension subspace codes is called orbit code. it arises as the orbits under the action of a subgroup of the general linear group on subspaces in an ambient space. in particular orbit codes of a singer subgroup of the general linear group has investigated recently. in this paper, we consider the normalizer of a singer subgroup of the general linear group a...

Article history: Received 13 January 2012 Received in revised form 22 April 2013 Accepted 22 April 2013 Available online xxxx In Iran like many other countries, the categorization of postal envelopes is executed manually, mostly based on the handwritten addresses and zip codes. That process is still slow and prone to man-made errors. Therefore, having an automated, accurate and efficient system...

Objectives: A discrepancy exists in the geographical distribution of dermatologists across United States (US). The aim this study was to reexamine current density describe any changes compared date from 5 and 12 years ago.
 Methods: Membership data 2021 American Academy Dermatology (AAD) database were retrieved characterize 3-digit zip code areas.
 Results: Out 712 populated codes wit...