 Terrapin Software  Terrapin Software
Terrapin Logo sells Logo products and other educational software and Logo materials, such as Mission Control, Crystal Rain Forest, and Roamer World. Take a quick lesson in Logo programming; learn about robotics powered by Logo, such as Universal Robotics
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 Testing Subsets Using Prime Numbers  Ian Clarke
Algorithm for subset testing which assigns a prime number to each element of the set and multiplies the primes. With descriptions of and comparisons to two other algorithms.
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 Tetrakys
Interlooping equilateral, isosceles, and scalene triangles for building two and threedimensional geometric objects, exploring area and volume, and visualizing fractions and arithmetic operations. The foam composition of these colorful manipulatives
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 Theoretical Computer Science  Elsevier Science
The journal is mathematical and abstract in spirit, but derives its motivation from practical and everyday computation. Its aim is to understand the nature of computation and to provide more efficient methodologies. All papers introducing or studying
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 The Theory Group  University of St. Andrews, U.K.
The Theory Group investigates aspects of theoretical computer science including: specification; automated theorem proving techniques and applications (especially in computer algebra); computational logic, including logic programming and proof theory;
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 Three Years Of Computing: Final Report on the Palindrome Quest  John Walker
"Pick a number. Reverse its digits and add the resulting number to the original number. If the result isn't a palindrome, repeat the process. Do all numbers in base 10 eventually become palindromes through this process? Nobody knows." The story of a
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 Traveling Salesman's Sketchpad  Selim Tezel
The Traveling Salesman's Sketchpad lets you investigate the Euclidean Traveling Salesman Problem (TSP) using an interface inspired by The Geometer's Sketchpad®. The Traveling Salesman's Sketchpad facilitates algorithm and data visualization, conjecture
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 The Travelling Monkey  Ivars Peterson (MathLand)
One of the classic problems of planning ahead concerns a traveling salesman who must visit customers in a number of cities scattered across the country and then return home. The problem is to find the shortest possible route visiting each city only once.
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 The Travelling Salesman's Problem  Manu Konchady
A trucking or delivery company is focused on optimum delivery cost. This can be achieved by using a system which determines the best highway route for each load. An optimum highway route can be displayed on a map. A route with 16 nodes is used to test
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 University of South Carolina High School Math Contests  David Sumner
Problems from the University of South Carolina (USC) High School Math Contests, since 1994. Walk step by step through illustrated solutions to each problem using the "next step" button. The delivery of questions is designed for competitive timing. Also,
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 Victor Shoup's Home Page
Download research papers on cryptographic protocols and on algorithms for solving problems in the area of number theory and algebra. The Courant Institute researcher freely offers a standard for publickey encryption, a simple LaTeX class for preparing
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