This work shows a cascaded internal multiple attenuation workflow based on top-down inverse scattering series (ISS) predictions followed by adaptive subtraction. The ISS multiple modeling is purely data driven and does not assume a priori subsurface information such as velocity field and known generating horizons. Adaptive subtraction is employed to match the predicted model with the internal multiples present in the data set. A case study using the topdown cascaded workflow was applied to a pre-stack field data set located in western Alberta, Canada, where the interval between the Duvernay formation and the shale/basin contact is contaminated by strong internal multiples. The workflow attenuated most of the internal multiples present in the target zone, improving the overall primary resolution and highlighting weak events previously hindered by multiples.

In recent decades, the trope that classical Muslim thinkers anticipated or influenced modern European thought has provided an easy endorsement of their contemporary relevance. This article studies how Arab editors and intellectuals, from 1882 to 1947, understood the twelfth-century Andalusian philosopher Ibn Ṭufayl, and Arabo-Islamic philosophy generally. This modern generation of Arab scholars also attached significance to classical Arabic texts as precursors to modern European thought. They invited readers to retrospectively identify with Ibn Ṭufayl and his treatise, Ḥayy ibn Yaqẓān. Comparisons of Ibn Ṭufayl to European thinkers, and re-presentations of Ḥayy ibn Yaqẓān as the precedent or genesis of European thought, facilitated these editors’ global imaginaries, anti-colonial projects and political fantasies. This article tracks these projects and fantasies through the afterlife of Ḥayy ibn Yaqẓān from early printings and generalist surveys to later editions and studies, as Ibn Ṭufayl’s significance became sutured into his imagined importance for Europe, and for going beyond Europe.

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Recent decades have seen a turn toward colonialism and anticolonial thought in the discipline of political theory. This turn has done the crucial work of bringing questions of dispossession, racialization, and the critical imaginaries of marginalized bodies of thought into the mainstream of the discipline. The expansion, however, has been marked by a tendency to typecast the archive of anticolonial thought with a handful of figures. This article examines the edge of the archive, or three thinkers who are only at its margins. They are Jamāl al-Dīn al-Afghānī, Qāsim Amīn, and Sayyid Quṭb, each of whom occupies a central place in the archive of modern Islamic thought. The article reads the peripheries of their works, tracing the arcs formed by their incidental references to places around the world, and, ultimately, probing their location in anticolonialism and contemporary critical thought. The article calls this double method of selection and interpretation periphereia.