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The Problem Solvers Caucus is a group in the United States House of Representatives that has included members equally divided between Democrats and Republicans, with the Caucus' stated goal of fostering bipartisan cooperation on key policy issues. The group was created in January 2017 as an outgrowth of meetings held by political organization ...
The Trachtenberg system is a system of rapid mental calculation. The system consists of a number of readily memorized operations that allow one to perform arithmetic computations very quickly. It was developed by the Russian engineer Jakow Trachtenberg in order to keep his mind occupied while being in a Nazi concentration camp .
Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.
Algebrator. Algebrator (also called Softmath) is a computer algebra system (CAS), originally known as Edusym and developed beginning in 1988. This is a CAS specifically geared towards algebra education. [1] Beside the computation results, it shows step by step the solution process and context sensitive explanations.
A computer algebra system ( CAS) or symbolic algebra system ( SAS) is any mathematical software with the ability to manipulate mathematical expressions in a way similar to the traditional manual computations of mathematicians and scientists. The development of the computer algebra systems in the second half of the 20th century is part of the ...
Acalculia is an acquired impairment in which people have difficulty performing simple mathematical tasks, such as adding, subtracting, multiplying, and even simply stating which of two numbers is larger. Acalculia is distinguished from dyscalculia in that acalculia is acquired late in life due to neurological injury such as stroke, while ...
It becomes easier to solve with less calculations required. A reasonable value for u could be u = t·t/4 for the corresponding t based on the largest product of two factors whose sum are t being (t/2)·(t/2). Now the problem has a unique solution in the ranges 47 < t < 60, 71 < t < 80, 107 < t < 128, and 131 < t < 144 and no solution below that ...
The first Mental Calculation World Cup was held in Annaberg-Buchholz, Germany on 30 October 2004. There were 17 participants from 10 countries. The World Cup involved the following contests (and two surprise tasks): Adding ten 10-digit numbers, 10 tasks in 10 minutes. Winner: Alberto Coto (Spain); 10 correct results; 5:50 minutes, world record.
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