Positive curvature, like that on a sphere, implies a finite universe, while zero curvature, as on a flat plane or negative ...

We are now a week beyond the Octave of Christmas, an eight-day celebration of the Nativity Creche of the baby Jesus that continued until the New Year.

Previous experiments indicate that the shape of maps of preferred orientation in the primary visual cortex does not depend on visual experience. We propose a network model that demonstrates that the ...