Prof. J. T. MacGregor-Morris

Prof. Dr. Prof. Prof.

MOLLIE MACGREGOR and KAYE STACEY

Research studies have found that the majority of students up to age 15 seem unable to interpret algebraic letters as generalised numbers or even as specific unknowns. Instead, they ignore the letters, replace them with numerical values, or regard them as shorthand names. The principal explanation given in the literature has been a general link to levels of cognitive development. In this paper w...

6 . 042 J / 18 . 062 J , Fall ’ 05 : Mathematics for Computer Science October 3 Prof . Albert

A 1994 University of Chicago study entitled The Social Organization of Sexuality found that on average men have 74% more opposite­gender partners than women, confirming a view that men are more promiscuous. But whoever reported this finding was lying or confused! We’ll show you how to use the properties of vertex degrees in a graph to prove this. Let’s recast opposite­gender partnering in graph...

Look Closely: Lessons Prof. Gérard T. Simon Might Have Taught

This symposium honors Prof. Gérard T. Simon, a respected colleague in the field of ultrastructural pathology. Though he distinguished himself during the several decades of his career as an outstanding diagnostician, laboratorian, and investigator, he is perhaps best known as an educator and evangelist for the importance of electron microscopy, particularly for trainees. It is no surprise that t...

Supersymmetric T-j Models

In this work, we have studied the invariants of motion of two SU (N) super-symmetric t-J models of 1/r 2 hopping and exchange in one dimension. The first model is defined on a lattice of equal spaced sites, and the second on a non-equal spacing lattice. Using the " exchange operator formalism " , we are able to construct all the invariants for the models, by mapping the systems to mixtures of f...