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Problem with the Fisher information matrix in case of $N$ measurements of two observables
Let consider two observables, $x$ and $y$. Suppose that $y$ depends on the independent variable $x$ through the model $m(x; \boldsymbol{\theta})$, where $\boldsymbol{\theta}$ is a vector of model ...
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Precision in cosmological constant
The observed cosmological constant, what is its precision? How precise do we know is it not a fluke or misinterpretation of cosmological data?