""'The Penguin Dictionary of Curious and Interesting Numbers " "'is a reference book for recreational mathematics and elementary number theory written by David Wells.
12.
Gentzen explained : " The aim of the present paper is to prove the consistency of elementary number theory or, rather, to reduce the question of consistency to certain fundamental principles ".
13.
Among other problems in elementary number theory, he is the author of a theorem that allowed him getting a 5328-digit number that is at present the largest known primitive weird number.
14.
In addition it contains : didactical games ( like Number Shark, Divider Game, or Zudo-Ku ) and interactive tutorials about primes, elementary number theory, and lattice-based cryptography.
15.
Euclid s algorithm to compute the greatest common divisor ( GCD ) to two numbers appears as Proposition II in Book VII ( " Elementary Number Theory " ) of his " Elements ".
16.
This is only problem 3 in Chapter 1 of William Chen's " Elementary Number Theory " so it shouldn't be that hard . talk ) 14 : 32, 20 February 2010 ( UTC)
17.
In this book, there are group theoretical applications in Galois theory, elementary number theory, and Platonic solids, as well as extensive studies of ornaments, such as those that Speiser studied on a 1928 trip to Egypt.
18.
Intent on eventually settling in Jerusalem, he taught himself Hebrew and delivered a lecture entitled " Solved and unsolved problems in elementary number theory " in Hebrew on April 2, 1925 during the University's groundbreaking ceremonies.
19.
This is commonly called the generalized M�bius function, as a generalization of the inverse of the indicator function in elementary number theory, the M�bius function . ( See paragraph below about the use of the inverse in classical recursion theory .)
20.
When proving basic results about the natural numbers in elementary number theory though, the proof may very well hinge on the remark that any natural number has a successor ( which should then in itself be proved or taken as an axiom, see Peano's axioms ).
