Correction (au dessus des pointillés) : « h 2 ( d 2 d ′ z d x ) 0 {\displaystyle h^{2}\left({\frac {\operatorname {d} ^{2}\operatorname {d} 'z}{\operatorname {d} x}}\right)_{0}} » → « h 2 ( d 2 d ′ z d x 2 ) 0 {\displaystyle h^{2}\left({\frac {\operatorname {d} ^{2}\operatorname {d} 'z}{\operatorname {d} x^{2}}}\right)_{0}} » (coquille)
