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Schur Stability Regions for Complex Quadratic Polynomials
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Cheng, Sui Sun; Huang, Shao Yuan – International Journal of Mathematical Education in Science and Technology, 2010
Given a quadratic polynomial with complex coefficients, necessary and sufficient conditions are found in terms of the coefficients such that all its roots have absolute values less than 1. (Contains 3 figures.)
Descriptors: Mathematics Instruction, Mathematical Concepts, Numbers, Equations (Mathematics)
Quadruples in the Four-Number Game with Large Termination Times
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Yueh, Wen-Chyuan; Cheng, Sui Sun – International Journal of Mathematical Education in Science and Technology, 2002
The discrete dynamical system of absolute differences defined by the map [psi]( x[subscript 1] , x[subscript 2] , x[subscript 3] , x[subscript 4] ) = ([vertical line] x[subscript 2] - x[subscript 1] [vertical line], [vertical line] x[subscript 3] - x[subscript 2] [vertical line], [vertical line] x[subscript 4] - x[subscript 3] [vertical line],…
Descriptors: Criterion Referenced Tests, Educational Games, Mathematical Concepts, Mathematical Logic