Chandler S. Robbins, 1918–2017

Autobiography of David Chandler.

I was born the younger of my parents’ two children, on October 15, 1944, at Brooklyn Jewish Hospital, in New York. Except for two years when I was five and six years old, I spent my formative years in Great Neck, a north shore Long Island suburb of New York City, where I benefited from material comforts, excellent schools, and abundant opportunities for cultural and recreational activities. My ...

Jane Robbins

Australian social policy has embraced what have loosely been termed " Third Way " initiatives over the last few years. The Howard government has announced a tripartate " Social Coalition " of government, business and community sectors as its chosen model for addressing social disadvantage and exclusion. " Mutual obligation " , " social entrepreneurialsm " , " partnerships " and " capacity build...

The Robbins Equation

Researchers have long been interested in nding simple axiomatizations of theories, including Boolean algebra. Boolean algebra can be axiomatized in many diierent ways using various sets of operations. The ordinary operations of Boolean algebra are disjunction (+), conjunction (), negation (0), zero (0), and one (1). One of the rst simple axiomatizations was presented by E. V. (Associativity) ((...

Semiotics by Daniel Chandler Adapted

Nonaliquots and Robbins Numbers∗

Let φ(·) and σ(·) denote the Euler function and the sum of divisors function, respectively. In this paper, we give a lower bound for the number of m ≤ x for which the equation m = σ(n)−n has no solution. We also show that the set of positive integers m not of the form (p − 1)/2 − φ(p − 1) for some prime number p has a positive lower asymptotic density. ∗MSC numbers: 11A25; 11A41, 11N64