Emilio Segrè (1905—1989)

To Emilio and

Emilio Gentile : Politics as Religion

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Generalizations of the Fermi-Segrè formula.

2014 A generalization of the non-relativistic Fermi-Segrè formula into a formula which is valid also for angular momentum quantum numbers 1 différent from zero, is derived by means of a phase-integral method. The formula thus obtained, which gives an expression for the limit of u(r)/rl+ 1 as r ~ 0, where u(r) is a normalized bound-state radial wavefunction, in terms of the derivative of the ene...

Curve - constrained drawings of planar graphs ✩ Emilio

Let C be the family of 2D curves described by concave functions, let G be a planar graph, and let L be a linear ordering of the vertices of G. L is a curve embedding of G if for any given curve Λ ∈ C there exists a planar drawing of G such that: (i) the vertices are constrained to be on Λ with the same ordering as in L, and (ii) the edges are polylines with at most one bend. Informally speaking...

Constraint Logic Programming with a Relational Machine 1 Emilio

We present a declarative framework for the compilation of constraint logic programs into variablefree relational theories which are then executed by rewriting. This translation provides an algebraic formulation of the abstract syntax of logic programs. Logic variables, unification, and renaming apart are completely elided in favor of manipulation of variable-free relation expressions. In this s...