This article surveys recent advances in the equivariant approach to the method of moving
frames, concentrating on finite-dimensional Lie group actions. A sampling from the many …

Bowley's law, also referred to as the law of the constant wage share, was a noteworthy
empirical finding in economics, suggesting that a nation's wage share tended to remain …

Image feature points are detected as pixels which locally maximise a detector function, two
commonly used examples of which are the (Euclidean) image gradient and the Harris …

This paper introduces a new, fully recursive algorithm for computing moving frames and
differential invariants of Lie pseudo-group actions. The recursive method avoids unwieldy …

Obtaining complete information about the shape of an object by looking at it from a single
direction is impossible in general. In this paper, we theoretically study obtaining differential …

The orthogonal projection of a closed, bounded, strictly convex body in three-dimensional
space onto a two-dimensional plane defines a closed strictly convex curve known as an …

Extracting features is one of the core issues in pattern recognition, in which affine invariant is
important method to recognize object under complex environment. To solve the issues of the …

Problem:[M. Berger, Geometry II, 1987)] Locate four points on each of the following
photograph, transfer them to a blank sheet of paper, and verify that the two sets of points …