Polynomial orbits in finite commutative rings
Let be a finite commutative ring with unity. We determine the set of all possible cycle lengths in the ring of polynomials with rational integral coefficients.
Let be a finite commutative ring with unity. We determine the set of all possible cycle lengths in the ring of polynomials with rational integral coefficients.
Cryptology is the science of encryption, decryption and deciphering. The ability to use secret means of communication and the ability to decipher secret messages were behind many historical events. This article – by means of selected historical events – will represent cryptology as an interesting scientific discipline that has been accompanying the mankind since antient times and has been permeating our daily lives up to the present times. The text also points at intermingling of many branches and...
Kryptologie je nauka o šifrování, dešifrování a luštění. Schopnost užívat prostředky tajné komunikace i schopnost luštit tajné zprávy stály za mnoha historickými událostmi. Článek prostřednictvím vybraných historických událostí představuje kryptologii jako zajímavou vědní disciplínu, která provází lidstvo od pradávna a v současné době prostupuje našim každodenním životem. Současně poukazuje na provázanost mnoha oborů a předmětů, kterou lze využít ve výuce. Druhá část se věnuje popisu základních...
Cryptology is the science of encryption, decryption and deciphering. The ability to use secret means of communication and the ability to decipher secret messages were behind many historical events. This article - by means of selected historical events - will represent cryptology as an interesting scientific discipline that has been accompanying the mankind since antient times and has been permeating our daily lives up to the present times. The text also points at intermingling of many branches and...
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