Solvability conditions and general solutions to some quaternion matrix equations
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DOI: 10.1002/mma.7696
Abstract: This paper studies some quaternion matrix equations. We use the equivalence canonical form to present some practical necessary and sufficient conditions for the existence of a solution to the system of quaternion matrix equations in… read more here.
Keywords: quaternion matrix; solvability conditions; matrix equations; conditions general ... See more keywords
Linearized M-stationarity Conditions for General Optimization Problems
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DOI: 10.1007/s11228-018-0491-6
Abstract: This paper investigates new first-order optimality conditions for general optimization problems. These optimality conditions are stronger than the commonly used M-stationarity conditions and are in particular useful when the latter cannot be applied because the… read more here.
Keywords: conditions general; general optimization; stationarity conditions; optimization problems ... See more keywords
The Role of Environmental Factors on Health Conditions, General Health and Quality of Life in Persons with Spinal Cord Injuries in South Africa
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DOI: 10.3390/ijerph20095709
Abstract: Objective: The objective was to describe the individual items of the environmental factors and to investigate the relationship between the environmental factors to health conditions, general health and quality of life in people with SCI… read more here.
Keywords: conditions general; health; health quality; environmental factors ... See more keywords