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Quasiconvexity is a generalisation of convexity for functions defined on matrices, to see this let and ((,),) with (,) =. The Riesz-Markov-Kakutani representation theorem states that the dual space of C 0 ( R m × d ) {\displaystyle C_{0}(\mathbb {R} ^{m\times d})} can be identified with the space of signed, finite Radon measures on it.
That is, strict quasiconvexity requires that a point directly between two other points must give a lower value of the function than one of the other points does. A quasiconcave function is a function whose negative is quasiconvex, and a strictly quasiconcave function is a function whose negative is strictly quasiconvex.
In convex analysis and the calculus of variations, both branches of mathematics, a pseudoconvex function is a function that behaves like a convex function with respect to finding its local minima, but need not actually be convex.
I've just made several pages redirect here; this is the only actual article that deals with weak or strict quasiconcavity or quasiconvexity. Relatedly, I deleted the "see also" link to the nonexistent article on strict quasiconvexity, including a definition here.
Psychophysiology measures exist in multiple domains; reports, electrophysiological studies, studies in neurochemistry, neuroimaging and behavioral methods. [5] Evaluative reports involve participant introspection and self-ratings of internal psychological states or physiological sensations, such as self-report of arousal levels on the self-assessment manikin, [6] or measures of interoceptive ...
Experiments in cognitive science and social psychology have revealed a wide variety of biases in areas such as statistical reasoning, social attribution, and memory. [ 3 ] Choice-supportive memory distortion is thought to occur during the time of memory retrieval and was the result of the belief that, "I chose this option, therefore it must ...
Quasi-realism is the meta-ethical view which claims that: . Ethical sentences do not express propositions.; Instead, ethical sentences project emotional attitudes as though they were real properties.
Consider the function : defined by () = whenever and () = whenever >.Clearly f is continuous everywhere except at x=0, thus quasi-continuous everywhere except (at most) at x=0.