## What is the metric in DSR ??

In DSR (= Double special relativit) what is the metric ? , and the dispersion relation (*)

for example in NORMAL special relativity

$$ds^{2} =dt^{2}-dx^{2}-dy^{2}$$ metric

$$(E/c)^{2}-|p|^{2}=m_{0}^{2}c^{2}$$ this is the 'dispersion relation'

in fact can we have a metric in DSR if we are talking about noncommutative spaces ??

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