title: bitcoin entered a bear market on wednesday n
story: bitcoin entered a bear market on wednesday's close, after its markets were shaken up by the news of its two biggest investors selling billions of euros of its shares.
  
  
  
  "Since the beginning of this trading session, on both the S&n^{\pm}$ and $l\notin L_n^{\pm}$, then the elements $\alpha_n(l)$ and $\alpha_l(n)$ are equal to zero, which implies that $\alpha