tag:blogger.com,1999:blog-2269351477810212131.post5654155157782699578..comments2024-03-22T08:22:47.170-07:00Comments on Copasetic Flow: Understanding How to Transpose Without Really Trying: EMII Notes 2014_08_09 Part IIantigrav_kids KD0FNRhttp://www.blogger.com/profile/08273077706643157078noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-2269351477810212131.post-22919657045741164882014-08-10T14:39:31.688-07:002014-08-10T14:39:31.688-07:00Well done! I remember really struggling with this ...Well done! I remember really struggling with this sort of thing when I was first starting on GR. <br /><br />It's not terribly enlightening, but I often found it helpful to prove index identities to myself using "brute force" by programming the summation into a computer and confirming the left-hand side is the same as the right-hand side. The reason I would do this is sort of two-fold.<br /><br />Sometimes it was helpful just to prove to myself the identity worked. I didn't really believe it until I saw it in action.<br /><br />And sometimes I misunderstood the index notation and got the identity wrong! The brute force would make that clear.Jonah Millerhttps://www.blogger.com/profile/01278146732703925136noreply@blogger.com