In this paper, the concept of strong acutecone is introduced, and the necessary and sufficient condition for existing such cone in a infinite dimensional space is obtained.
本文提出了强锐角锥的概念，并就无限维空间证明了一个凸锥为强锐角锥的必要充分条件。
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Acute cerebral swelling can also often produce herniation of the cerebelllar tonsils into the foramen magnum. Note the cone shape of the tonsils around the medulla in this cerebellum.