kronecker delta

zeroth week. repeat, this is week number ZERO.

but nevertheless professor jenkins successfully cracked up the whole class, although unintentionally. instead of the usual determinant method when doing cross products, she introduced what she called the einstein summation with levi-civita epsilon that uses kronecker delta, which supposed to make the cross product easier to evaluate.

zeroth day, zeroth week. and everyone in the class stared at the blackboard with mouth wide open. my brain had a "system overload" warning and then crashed almost instantaneously. i tried restarting it, but it refused to be restarted because it knew it wouldn't be able to handle the workload. feeling lost, i started cracking up. i thought everyone else would be looking at me like i'm crazy, but everyone else started cracking also. apparently their brains got fried as well.

friday, yes. but i need to start studying before i get weeded out.