We generalize two well-known model-theoretic characterization theorems from propositional modal logic to first-order modal logic. We first study FML-definable frames and give a version of the Goldblatt–Thomason theorem for this logic. The advantage of this result, compared with the original Goldblatt–Thomason theorem, is that it does not need the condition of ultrafilter reflection and uses only closure under bounded morphic images, generated subframes and disjoint unions. We then investigate Lindström type theorems for first-order modal logic. We show that FML has (...) the maximal expressive power among the logics extending FML which satisfy compactness, bisimulation invariance and the Tarski union property. (shrink)

Volume 20, Issue 7, July 2020, Page W15-W16.

The sublime has long been a key concept in the study of aesthetics. However, it has failed to gain traction in empirical aesthetics. With reference to Longinus, Burke, and Kant, this cross-disciplinary article defines the sublime as a mixture of fascination, exaltation, boundlessness, and fear. These descriptors are then compared with those of peak, ecstatic, and mystical psychological experiences; it is argued that they represent different approaches to the same phenomenon. In order to render sublime aesthetic states experimentally accessible, the (...) interplay of three factors is discussed. Firstly, focused attention and absorption are highlighted as active ingredients catalysing altered states. Secondly, external-to-internal entrainment is posited as a means by which a sense of continuity is established between perceiver and percept. Thirdly, it is recognized that autobiographical context and physical empathy will determine the extent to which any stimulus is capable of eliciting sublime feelings in an individual. (shrink)

Karakuş, Nadir, Bir İhtilalcinin Anatomisi Ebu Müslim Horasani, 2017, Neva Yayınları, 296 sayfa, ISBN 978-605-8332-83-6.

Regarded as a revisionist historian in the West, Patricia Crone, who wrote many books and articles on various subjects of early Islamic history, was a prolific researcher. The place and role of mawālī, in the Umayyad and Abbāsid society, has been one of the special topics she has been interested in since the very beginning of her academic life. Her works with a revisionist perspective have been faced many criticisms by colleagues, especially the western ones, because of her biased view (...) of the sources written by Muslim authors, her methodology, and her results. However, it is obvious that Crone’s studies on mawālī have positively or negatively affected the Eastern and Western academics in Islamic studies. This article’s main purpose is to reveal Crone’s views on mawālī in Isla-mic society and draw an outline without comment as much as possible. The paper consists of three parts. In the first part, Crone’s revisionist perspective and her works on mawālī have been explained. In the second part, her distinctive views on the mawālī and its origin have been discussed. Finally, in the third part, her findings of the position of mawālī in social, political, military, and economic life during the Rāshidun Caliphs, the Umayyads, and the Abbāsids have been introduced. This study, which tackles Crone’s views on mawālī, aims to encourage the further studies on this subject. (shrink)