1. It's not a tensor! [from Brandenberger] This problem is a simple game. Identify which of...

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1. It's not a tensor! [from Brandenberger] This problem is a simple game. Identify which of the following equations could be valid tensor equations; for the ones that can't be, say why not. Here I mean tensors c.g. under the Lorentz group (or maybe some more general transformations) where we must distinguish between covariant (lower) and contravariant (upper) indices. (a) R=T (b) Queb (c) O=3 (d) ab+The (e) (+b)= 1. It's not a tensor! [from Brandenberger] This problem is a simple game. Identify which of the following equations could be valid tensor equations; for the ones that can't be, say why not. Here I mean tensors c.g. under the Lorentz group (or maybe some more general transformations) where we must distinguish between covariant (lower) and contravariant (upper) indices. (a) R=T (b) Queb (c) O=3 (d) ab+The (e) (+b)=