V. Ufnarovski

activity

20152021

collaborators

3 papers

math.RA2021

Describing subalgebras of $K [x]$ using derivatives

Rode Grönkvist, Erik Leffler, Anna Torstensson +1

We introduce the concept of subalgebra spectrum, $S p (A)$ , for a subalgebra $A$ of finite codimension in $K [x]$ . The spectrum is a subset of the underlying field. We also i…

math.GM2019

Eigenvector of a matrix in $S O_{3} (R)$

Amol Sasane, Victor Ufnarovski

Let $A = [a_{ij}] \in O_{3} (R)$ . We give several different proofs of the fact that the vector $$ V:=\left[\begin{array}{ccc} \displaystyle \frac{1}{a_{23}+a_{32}} & \displaysty…

physics.pop-ph2015

Alternative proofs for Kocik's Geometric Diagram for Relativistic Velocity Addition

Amol Sasane, Victor Ufnarovski

A geometric construction for the Poincare formula for relativistic addition of velocities in one dimension was given by Jerzy Kocik in "Geometric Diagram for Relativistic Addition…

Describing subalgebras of K[x] using derivatives

Eigenvector of a matrix in SO3​(R)

Alternative proofs for Kocik's Geometric Diagram for Relativistic Velocity Addition

Describing subalgebras of $K [x]$ using derivatives

Eigenvector of a matrix in $S O_{3} (R)$