Theorem | Name |
Thm* as:T1 List, bs:T2 List, i: .
Thm* i<||zip(as;bs)||  zip(as;bs)[i] = <as[i],bs[i]> | [select_zip] |
cites the following: |
Thm* a:T, as:T List, i: . 0<i  i ||as||  [a / as][i] = as[(i-1)] | [select_cons_tl] |
Thm* as:T1 List, bs:T2 List. ||zip(as;bs)|| ||as|| & ||zip(as;bs)|| ||bs|| | [zip_length] |