PORMA lUNAlUA DFL SESt'oRDINE 34)ì 



f{e + U)-U(Q-{-lAr,)-à-c=0 . 



ma — l^-\-vJc=0 , 

 Jcij.-\-ly — na = , 

 ìt + fO + hB = , 



. - 2Bfk—AfA -f l fi' + 2Ak2ì -^ 6pà - ^hm + 2k''l=0 , 



. — lABfk—BfA + 2flm-^2Bkp + Ap^~lPp 



+ Sh{Bl—n)~k^m = 0. 

 .fm — 2lp-\- Bh + \Ak^— /• A = , 

 .fn-\-Ch^'\kì■~\Ak^-2^■ = 0, 



.Cfl + lBfm + 3pn — lklm-\-Ck' — 2Bk^-■A^'-l^■^=0, 

 .Cf-]-Bp~lkm — 21/^ = ^ 

 .^^B-f+2Cp—Bkl + kn-2mA = 0, 



.lBCf-^^Df-lACp-lCkl-}-A[^Am-Bì-^n^+lPm=0, 

 .[lB' + AC)Bf-\-Dp-]-lACk]-{-lCkm + lciA-B^m 



— o -4 A w — 5 In* — Im* = , 

 .l{AC + B')k + l{AB-\-6C)A + lBr--2ìn-m' = 0, 

 .I)k-]-l{AC-\-B')A-lCP-2mn = 0, 



:^^{AB + ()C)(lCk-lBà)+Dà-\BH'-^lcim+Bln-n'=0, 

 .-Bf7i-\-iApn-3Dh + ékln-lABkA-iCkA 



-\-{6B-A')A* + lAAP + 4:Mm-\-lV = 0, 

 Torino, marzo 1892. 

 Atti R. Accad. - Parte Fisica, ecc. — Voi. XXVI I. 26» 



