Abstract: Apparatus is provided, including one or more valve support guide members configured to be delivered to one or more commissures of a native atrioventricular valve of a patient, one or more valve support anchors configured to be anchored to the one or more commissures of the native valve, a prosthetic valve support advanceable toward the native valve along the one or more valve support guide members and anchored to the native valve at least the one or more commissures, and a prosthetic valve configured to be coupled to the valve support. Other applications are also described.

Abstract: A method for enabling sharing of content files among nodes of a P2P network is provided. The P2P network comprises sub-networks each including a respective plurality of nodes capable of storing content files. Each sub-network has an associated corresponding hash table for indexing the content files stored in the nodes of the sub-network. The hash table is distributed among at least some of the nodes of the sub-network. The method comprises, for each content file stored in at least one node of a sub-network, storing in the hash table associated with the sub-network a criticality index providing an indication of the degree of sharing of the content file among the nodes of the sub-network. The method causes a node to cache at least one content file for sharing with other nodes of the sub-network based on the criticality index of the at least one content file.

Abstract: A method for enabling sharing of content files among nodes of a P2P network is provided. The P2P network comprises sub-networks each including a respective plurality of nodes capable of storing content files. Each sub-network has an associated corresponding hash table for indexing content files stored in the nodes. The hash table is distributed among at least some of the nodes of the sub-network. For each content file stored in at least one node, the hash table comprises a corresponding node list of the sub-network nodes which store the content file. The method comprises associating each node of the sub-network listed in the node list corresponding to a content file with localization data indicating the localization of the node within the sub-network. The localization data defines a corresponding preferential list of the nodes storing the content file for downloading the content file by a requesting node.

Abstract: A method for enabling sharing of content files among nodes of a P2P network is provided. The P2P network comprises sub-networks each including a respective plurality of nodes capable of storing content files. Each sub-network has an associated corresponding hash table for indexing the content files stored in the nodes of the sub-network. The hash table is distributed among at least some of the nodes of the sub-network. The method comprises, for each content file stored in at least one node of a sub-network, storing in the hash table associated with the sub-network a criticality index providing an indication of the degree of sharing of the content file among the nodes of the sub-network. The method causes a node to cache at least one content file for sharing with other nodes of the sub-network based on the criticality index of the at least one content file.

Abstract: A method for enabling sharing of content files among nodes of a P2P network is provided. The P2P network comprises sub-networks each including a respective plurality of nodes capable of storing content files. Each sub-network has an associated corresponding hash table for indexing content files stored in the nodes. The hash table is distributed among at least some of the nodes of the sub-network. For each content file stored in at least one node, the hash table comprises a corresponding node list of the sub-network nodes which store the content file. The method comprises associating each node of the sub-network listed in the node list corresponding to a content file with localization data indicating the localization of the node within the sub-network. The localization data defines a corresponding preferential list of the nodes storing the content file for downloading the content file by a requesting node.

Abstract: Apparatus is provided, including one or more valve support guide members configured to be delivered to one or more commissures of a native atrioventricular valve of a patient, one or more valve support anchors configured to be anchored to the one or more commissures of the native valve, a prosthetic valve support advanceable toward the native valve along the one or more valve support guide members and anchored to the native valve at least the one or more commissures, and a prosthetic valve configured to be coupled to the valve support. Other applications are also described.