Andrei Toom, also known as André Toom, (born 1942) is a Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

n mathematician

Mathematician

A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....

 currently living in Brazil

Brazil

Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

, famous for his early work in analysis of algorithms

Analysis of algorithms

To analyze an algorithm is to determine the amount of resources necessary to execute it. Most algorithms are designed to work with inputs of arbitrary length...

 (culminating in the Toom–Cook algorithm), cellular automata, probability theory

Probability theory

Probability theory is the branch of mathematics concerned with analysis of random phenomena. The central objects of probability theory are random variables, stochastic processes, and events: mathematical abstractions of non-deterministic events or measured quantities that may either be single...

 and lifelong interest in mathematical education. Currently, Toom is a teacher of the statistics

Statistics

Statistics is the study of the collection, organization, analysis, and interpretation of data. It deals with all aspects of this, including the planning of data collection in terms of the design of surveys and experiments....

 department at Federal University of Pernambuco

Federal University of Pernambuco

The Federal University of Pernambuco is a public university located in Recife, Brazil, and established in 1946. UFPE has 70 undergraduate courses and 175 postgraduate courses. As of 2007, UFPE had near 35,000 students and about 2,000 professors. The university has three campuses: Recife, Vitória...

.

Toom's English-language mathematics articles, published in journals such as the Journal of Statistical Physics

Journal of Statistical Physics

The Journal of Statistical Physics is a bi-monthly publication containing both original and review papers, including book reviews. All areas of statistical physics as well as related fields concerned with collective phenomena in physical systems are covered. The Journal of Statistical Physics has...

, include "Non-Ergodic Multidimensional Systems of Automata," "Discrete Local Markov Systems," "On Critical Phenomena in Interacting Growth Systems," "Cellular Automata with Errors: Problems for Students of Probability," "Simple 1-Dimensional Systems with Super-Exponential Relaxation Time," "Tails in Harnesses," "On Percolation with Fibers or Layers," and "Non-Gibbsianness of the invariant measures of non-reversible cellular automata with totally asymmetric noise".

His English-language articles on education include "A Russian Teacher in America," "From Russia with Math," "How I Teach Word Problems," "Word problems: Applications vs. Mental Manipulatives," "Between Childhood and Mathematics: Word Problems in Mathematical Education," and the unpublished manuscript, "Wars in American Mathematical Education".