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- Theodore E. Djaferis, David L. Pepyne, David M. Cushing
- IEEE Trans. Automat. Contr.
- 2002

- DAVID CUSHING, J. E. PASCOE, RYAN TULLY-DOYLE, Margarete C. Wolf
- 2014

In 1936, Margarete C. Wolf showed that the ring of symmetric free polynomials in two or more variables is isomorphic to the ring of free polynomials in infinitely many variables. We show that Wolf's theorem is a special case of a general theory of the ring of invariant free polynomials: every ring of invariant free poly-nomials is isomorphic to a free… (More)

When defining the amount of additive structure on a set it is often convenient to consider certain sumsets; Calculating the cardinality of these sumsets can elucidate the set's underlying structure. We begin by investigating finite sets of perfect squares and associated sumsets. We reveal how arithmetic progressions efficiently reduce the cardinality of… (More)

- Theodore E. Djaferis, David L. Pepyne, David M. Cushing
- IEEE Trans. Automat. Contr.
- 2002

- D CUSHING, R N PRINCE, J SEIBERLICH
- Science
- 1946

The abc conjecture is a very deep concept in number theory with wide application to many areas of number theory. In this article we introduce the conjecture and give examples of its applications. In particular we apply the abc conjecture to the location of powerful numbers.

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