Complexity theorists sort problems into categories, called complexity classes, based on the resource demands of the best algorithms for solving them — that is, the algorithms that run fastest or use ...

Stefano Moroni, Complexity and the inherent limits of explanation and prediction, Planning Theory, Vol. 14, No. 3 (August 2015), pp. 248-267 ...

Coronal mass ejections (CMEs) are the primary drivers of adverse space weather in the inner heliosphere. Interactions between CMEs and other interplanetary structures can significantly alter their ...