Sensitivity of Eigenvalues to Nonsymmetrical, Dissipative Control Matrices by Vernon H. Neubert

“…Thus there is a definite pattern to the positions of numbers in the ith and jth rows of the C matrix, that is, a positive number on the diagonal is paired with an equal negative number, or zero, off the diagonal. With the control matrix G, it is here assumed that the positioning of individual controllers and sensors is flexible, with Fi=Ciiz˙i or Fi=Cijz˙j, the latter meaning that the control force at i is proportional to the velocity sensed at j. …”
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Dilemmas in solving one type of exponential equations in mathematics teaching by Marković Olivera R., Zubac Marina A.

“…Namely, in some collections of math problems the starting point is the fact that the real solutions to an equation are all real numbers for which the given equation becomes an exact equality, including those real numbers for which the base f(x) is a negative number, while in others the possibility of a negative base is excluded due to the area of definition of the function y = f ( x ) a(x). …”
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Optimization of fuzzy linear fractional programming problem with fuzzy numbers by Sapan Das

“…Decision variables are characterized by trapezoidal fuzzy numbers and non-negative numbers. Utilizing the ranking function and computation of trapezoidal fuzzy numbers, the FLFP problem is transformed into a Crisp Linear Fractional Programming (CLFP) problem. …”
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Studying dynamic changes in body mass and mass of internal organs in laboratory rats experimentally infected with bovine leukosis virus by E. S. Krasnikova, R. V. Radionov, A. V. Krasnikov, A. Yu. Svetozarova

“…There was a clear body mass increase in BLV-infected laboratory rats, then followed by a decrease down to negative numbers. The reverse trend was observed for such internal organs of the experimental animals as liver, spleen, kidneys and lungs. …”
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