>> num_to_int
>> num_to_int
definition num_to_int : num → int :=
λ (n : num), int.of_nat (nat.of_num n)
num_to_int : num → int
comp1.lean:11:6: error: unknown identifier 'num_to_int_2'
>> vec_len
>> list_to_matrix
>> list_to_matrix
definition vec_len : Π {A : Type.{l_1}} {n : nat}, vector.{l_1} A n → nat :=
λ {A : Type.{l_1}} {n : nat} (a : vector.{l_1} A n), @list.length.{l_1} A (@to_list.{l_1} A n a)
definition list_to_matrix : Π {A : Type.{l_1}} (l : list.{l_1} A), matrix.{l_1} A (@list.length.{l_1} A l) (nat.of_num 1) :=
λ {A : Type.{l_1}} (l : list.{l_1} A), @to_matrix.{l_1} A (@list.length.{l_1} A l) (@to_vector.{l_1} A l)
comp1.lean:24:6: error: unknown identifier 'list_to_matrix_2'