1. Within the framework of Article 6, the ECB shall, in accordance with paragraph 3 of this Article, be exclusively competent to carry out, for prudential supervisory purposes, the following tasks in relation to all credit institutions established in the participating Member States:
(a) to authorise credit institutions and to withdraw authorisations of credit institutions subject to Article 14;
(b) for credit institutions established in a participating Member State, which wish to establish a branch or provide crossborder services in a non participating Member State, to carry out the tasks which the competent authority of the home Member State shall have under the relevant Union law;
(c) to assess notifications of the acquisition and disposal of qualifying holdings in credit institutions, except in the case of a bank resolution, and subject to Article 15;
(d) to ensure compliance with the acts referred to in the first subparagraph of Article 4(3), which impose prudential requirements on
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