Computes the small sigma limit of ATM location, rho/stdev, and ATM skew of \(Q_p\) under the RNO measure in quartic model. Computes the maximum risk-neutral violation as an extension of RN0 measure.
ecld.quartic_SN0_atm_ki()ecld.quartic_SN0_rho_stdev()
ecld.quartic_SN0_skew()
ecld.quartic_SN0_max_RNV(sigma = 0)
numeric, the volatility parameter
numeric