3 citations · 4 across the 10 of their papers we have counts for
11 papers
Subgroup Inconsistency and the Dilution Effect in Levene's Test for Homoscedasticity
Vladimir Gurvich, Mariya Naumova
Levene's test for homoscedasticity is a standard procedure used to evaluate whether multiple groups of independent observations share a common variance. Because Levene's test relie…
Bridge distances for networks
Vladimir Gurvich, Mariya Naumova
Let be a finite directed graph with a non-negative real length assigned to every directed edge . We assume that for every non-edge $e \no…
On pairs of triangular numbers whose product is a perfect square and pairs of intervals of successive integers with equal sums of squares
Vladimir Gurvich, Mariya Naumova
In 1778 Leonhard Euler characterized triangular numbers that are perfect squares. Obviously, the product of any two such numbers is a perfect square too. Yet, there are many other…
Partitioning set into subsets of size at most such that all sums are powers of
Vladimir Gurvich, Mariya Naumova
Given integers and , we say that a partition of the set is {\em -good} if the number of elements in each part is at most and their sum…
Critical issues with the Pearson's chi-square test
Vladimir Gurvich, Mariya Naumova
Pearson's chi-square tests are among the most commonly applied statistical tools across a wide range of scientific disciplines, including medicine, engineering, biology, sociology,…
A counterexample to conjecture "Catch 22"
Bogdan Butyrin, Vladimir Gurvich, Anton Lutsenko +2
We construct a finite deterministic graphical (DG) game without Nash equilibria in pure stationary strategies. This game has 3 players and 5 outcomes: 2 terminal $a_1…
Growing Trees and Amoebas' Replications
Vladimir Gurvich, Matjaž Krnc, Mikhail Vyalyi
An amoeba is a tree together with instructions how to iteratively grow trees by adding paths of a fixed length . This paper analyses such a growth process. An amoeba is morta…
Screw discrete dynamical systems and their applications to exact slow NIM
Vladimir Gurvich, Mariya Naumova
Given integers such that and an integer vector ; denote by the number of entries of that are multiple of .…
Experimental Study of the Game Exact Nim(5, 2)
Vladimir Gurvich, Artem Parfenov, Michael Vyalyi
We compare to different extensions of the ancient game of nim: Moore's nim and exact nim. Given integers and such that , we consider $n…
On remoteness functions of k-NIM with k+1 piles in normal and in misère versions
Vladimir Gurvich, Vladislav Maximchuk, Georgy Miheenkov +1
Given integer and such that and piles of stones, two players alternate turns. By one move it is allowed to choose any piles and remove exactly one st…
GM-rule and its applications to impartial games
Vladimir Gurvich, Mariya Naumova
Given integer , and vector that has an entry which is a multiple of and such that , the GM-rule is…