Re: fast replace for matrix minor

*To*: mathgroup at smc.vnet.net*Subject*: [mg69540] Re: fast replace for matrix minor*From*: "astanoff" <astanoff at gmail.com>*Date*: Fri, 15 Sep 2006 06:44:55 -0400 (EDT)*References*: <200609130803.EAA18423@smc.vnet.net><eebfap$31c$1@smc.vnet.net>

Carl K. Woll wrote: > Something like this? > m=Array[Plus,{5,5}]; > Replace minor block with rows 2,3,4 and columns 4 and 5: > m[[Range[2,4],Range[4,5]]] = {{a,b},{c,d},{e,f}}; > Now, the matrix m has had a minor block replaced with the above matrix. > Carl Woll > Wolfram Research Hi Carl, I wish I could delete my ridiculous post cause your solution is more than 100 times faster and simpler than mine! Best regards, V.Astanoff

**References**:**fast replace for matrix minor***From:*Christopher Arthur <caa0012@unt.edu>