Equivalence and Singularity for Friedman Urns

Synchronization and fluctuation theorems for interacting Friedman urns

Quantum Cosmological Friedman Models with an Initial Singularity

Using a new ansatz for the quantization of the EinsteinHilbert functional, we obtain a regular Lagrangian to define a Hamilton functionH. A solution of the Euler-Lagrange equation of our functional satisfies the Einstein equations iff it is also a solution of the Friedman equation which is equivalent to the condition H = 0 in phase space. After quantization we have a selfadjoint Hamilton operat...

Anxiety, Alcohol, Aphasia, and Urns

Although several studies have documented a link between anxiety and filled pauses (urns, ers, and uhs), numerous failures make it impossible to believe that the two are linked in any simple way. This article suggests anxiety may increase urns not when it makes the speech task harder but when it causes the speaker to pay attention to the speech. Two experiments examined this idea. One manipulate...

Signature submanifolds for some equivalence problems

This article concerned on the study of signature submanifolds for curves under Lie group actions SE(2), SA(2) and for surfaces under SE(3). Signature submanifold is a regular submanifold which its coordinate components are differential invariants of an associated manifold under Lie group action, and therefore signature submanifold is a key for solving equivalence problems.

B - urns 1

The fringe of a B-tree with parameter m is considered as a particular Pólya urn with m colors. More precisely, the asymptotic behaviour of this fringe, when the number of stored keys tends to infinity, is studied through the composition vector of the fringe nodes. We establish its typical behaviour together with the fluctuations around it. The well known phase transition in Pólya urns has the f...