The ridge coefficients minimize a penalised residual sum of squares:

$\hat{w}_{ridge}= \arg\min(\sum_{i=1}^{N}(y_{i}-w_{0}-\sum_{j=1}^{d}x_{ij}w_{j})^{2}+\lambda\sum_{j=1}^{d}w_{j}^{2}),\,\lambda\geq0$

Now I want to show that the above minimisation is equivalent to:


where $\bar{x}_{j}$ is the mean of the j-th element

what im trying to find is the Give the correspondence between $w^{c}$ and the original $w$

Would appreciate some guidance and help


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