From 97f5cf924367cb47e2fa411c1bbe29bd18f9ce17 Mon Sep 17 00:00:00 2001 From: bnewbold Date: Tue, 3 Feb 2009 05:31:40 -0500 Subject: finished for the night --- journal/02feb2009.html | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'journal') diff --git a/journal/02feb2009.html b/journal/02feb2009.html index 7f29192..658538a 100644 --- a/journal/02feb2009.html +++ b/journal/02feb2009.html @@ -4,7 +4,7 @@ bnewbold thesis

-Journal: Jan 27, 2009

+Journal: Feb 02, 2009 Bryan Newbold, bnewbold@mit.edu
http://web.mit.edu/bnewbold/thesis/ @@ -94,7 +94,19 @@ And then interactively:

That looks a lot better! -

+

+I don't know why I didn't notice it earlier, but the way dx, d/dx, etc are +defined is the instantiate-coordinates procedure. +

+There's definately some funky funk in the original differential geometry memo +around page 20 w/r/t R2 vs R3 coordinates. +

+From page 28: "You can tell if a set of basis vector fields is a coordinate +basis by calculating the commutators. If they are non-zero, then the basis +is not a coordinate basis." Isn't that just for orthogonal bases? Need to think +this through. + +

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