2o8 Sopra l'analisi lineare ec. 



{a,b,c) = {b,c)a — (a.c)b ■+■ («,^)c^ 



{a,b^d) =: {b,d)a^ — {^À)b^ -t- {a,b)d 

 {a,b,e) = {b,e)a^— {a,e)b_^-{- {a,b)e ^ 

 {a,b,f) = {bj)a- {a,f)b^-^ [a,b)f^ 

 {a,c,d) = {c,d)(i^—{a,d )c^-h{a,c)d^ 

 (a,c,e) = {c,e)a^ — {a,e)c^ -4- {a,c)e^ 

 {a,c,f) = {c,f)a^ - {aj)c^ -i- (a,c)/^ 

 (a, J,e) = {d,e)a^ — {a,e)d^ •+• {a,d)e_^ 

 (a,d,f) = {d,f)a^ — {a,f)d^-^ {a,d)f^ 

 (3o) (fl,e,/) = (e/)a^ - («,/)^^ -H {a,e)f^ 



[b,c,d) = (c.r/)ì'^ — {b4)c^-^[b,c)d^ 

 {b,c,e) = (c,e)i^ — {b,e)c^ H- (^^,0)^^ 

 (Z,,c/) = {c/)b^^ - {b.f)c^ + (^^,0)/^ 

 {b4.e) = (^,e)Z.^ — (Z.,e)^^-+- (Z.//)e^ 

 {b4.f) = {d,f)b^ - {b.f)d^^ + {b4)f^ 

 (b,e,f) = (e,f)b^^ - {b.f)e^ + {b,e)f^ 

 {c,d,e) = {d.>e)c^ — (c,e)^^ -h {c,d)e^ 

 (ed/) = {d/)c^ - {c/)d^-^ {c4)f^ 

 (ce,/) = (e,/)c^ - [c,f)e^ -^ {c,e)f^^ 

 {d,e,f) = {e.f)d - [d.f)e^ -H {d,e)f 



