Entry
Value
Package Name
list-length-thm
Count
4
Theorems
LENGTH_EQ_CONS
: !l n. LENGTH l = SUC n <=> (?h t. l = CONS h t /\ LENGTH t = n)
LENGTH_EQ_NIL
: !l. LENGTH l = 0 <=> l = []
LENGTH_TL
: !l. ~NULL l ==> LENGTH (TL l) = LENGTH l - 1
NULL_LENGTH
: !l. LENGTH l = 0 <=> NULL l
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