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Theorem div2
⊦ 2 ^ i / 2 = 2 ^ (i - 1)
Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by:
Used by units in proved state:
Proof exists?: Yes
View
the proof
Infos about the proof
Proved?: Yes
Interactions: 1
Proof steps: 3
Used lemmas:
eq-one
,
pot-zero-01
,
two-minus
,
Pot-pos
,
Used spec theorems:
Used simplifier rules:
int-abs
/
elim-sub
int-basic2
/
pred
int-basic2
/
add-a
int-basic2
/
add-c
int-div
/
div-mult-num-01
int-div
/
one
int-mult
/
associativity
int-mult
/
commutativity
int-abs
/
numls-02
int-abs
/
mone-06
int-abs
/
lels-01
int-div
/
div2-zero
int-abs
/
numls-03
int-abs
/
numadd-01
int-basic1
/
lst-01
int-abs
/
lels-03