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2008 Oct 20
3
A question about positive definite matrix
I know, this is a forum about R. But I am so desperate of this problem (BTW, anyone knows any good Statistics/Math forum to post question like this?): A and B are both n x n positive definite matrix. Denote A > B, if A - B is positive definite. I know this is true: if A > B, then A^{-1} < B^{-1}. But how to prove this? I tried to diagonalize A and B, but since they can have different
2019 Sep 05
3
DNS question
...eed:fbff:fe91:aa41/64 scope link > 3: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP > group default qlen 1000 > ??? link/ether 4c:ed:fb:91:aa:42 brd ff:ff:ff:ff:ff:ff > ??? inet X.X.103.1/22 brd X.X.103.255 scope global eno1 > ??? inet6 fe80::4eed:fbff:fe91:aa42/64 scope link > > ----------- > ?????? Checking file: /etc/hosts > > 127.0.0.1??? localhost > X.X.103.1??? dc1.xxx.yyy.zzz??? dc1 > > # The following lines are desirable for IPv6 capable hosts > ::1???? ip6-localhost ip6-loopback > fe00::0 ip6-localnet > ff00::0...
2019 Sep 05
4
DNS question
Dear list, we use debian stretch with Louis's 4.10.5 packages and bind9_dlz backend. There are two AD DCs with redundant ISC DHCP servers on them. The DHCP servers are updating the DNS along the lines of https://wiki.samba.org/index.php/Configure_DHCP_to_update_DNS_records_with_BIND9 but with nsupdate commands replaced by suitable calls to "samba-tool" (I had problems getting the
2011 Jan 11
2
IE6 install problem
...y?webdav-method=TRUTHGET&sortkey=href&feedfmt=atom&depth=1 transactionState=kDMTransactionHadError httpStatusCode=-1 contentLength=-1 bytesTransferred=-1 isSuccessful=NO isFinished=YES) 11-01-06 11:51:27 AM iWeb[5173] <MM_MMTransaction: 0x19019160>(transactionID=4453556D-B600-4CB3-AA42-B276DAA706A1 uri=/WSComments.woa/xmlrpc?username=sell3480carmichaelrd transactionState=kDMTransactionHadError httpStatusCode=-1 contentLength=387 bytesTransferred=0 isSuccessful=NO isFinished=YES) 11-01-06 11:51:27 AM iWeb[5173] <MM_MMTransaction: 0x22e83b0>(transactionID=4379D78D-7A01-42EE-A...