But even his most impenetrable Cubist paintings have a definite subject.
Although bent on writing a history, he had not settled on a definite subject.
"The most suited design for a hospital mural should contain no definite subject matter but should be generally soothing in its line and color," Bolotowsky wrote in his proposal.
However, though dialectic has no definite subject, it is easy to see that it nevertheless rests on a method, because dialectic has to grasp the reason why some arguments are valid and others are not.
Plato argued in his Gorgias that rhetoric cannot be an art (technê), since it is not related to a definite subject, while real arts are defined by their specific subjects, as e.g. medicine or shoemaking are defined by their products, i.e., health and shoes.
Accordingly, the stability, convergence and long-time behaviour are rigorously analysed once the spatial differential operator is approximated by an appropriate positive semi-definite matrix, subject to suitable temporal and spatial smoothness.
One could argue that beneficence implies an obligation to address risks not directly related to research, because these risks can have a definite impact on subjects' well-being.
But a couple of days later, there's an equality debate with Trevor Phillips and when I speak to him afterwards he's pretty definite on the subject: they are different.
Subjects with chronic headache (n = 22) consisted of subjects with definite TTH (n = 11), definite migraine (n = 4), MOH (n = 5), probable TTH (n = 1), and cerviogenic headache (n = 1).
In the unadjusted analyses, the prevalence of severe sleep disturbances (defined as a KSQ score the upper quartile) was higher for subjects with definite migraine (n = 51) (33.3%), definite TTH (n = 135) (30.4%), and "other headaches" (n = 34) (32.4%) compared with headache-free individuals (n = 76) (13.2%) (Table 1).
