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Theorem coef-fac-divides
⊦ 0 < j ∧ j ≤ i → fac(j) * fac(i - j) | fac(i)
Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by:
coef-rec-add-01
,
fac-divides
,
Used by units in proved state:
Proof exists?: Yes
View
the proof
Infos about the proof
Proved?: Yes
Interactions: 6
Proof steps: 12
Used lemmas:
coef-fac-divides-h
,
fac-rec
,
fac-one
,
fac-zero
,
Used spec theorems:
Used simplifier rules:
int-abs
/
forward-le-05
int-abs
/
forward-le
int-abs
/
ler
int-abs
/
sub-sub-03
int-gcd
/
div-zero
int-basic1
/
forward-pos
int-mult
/
one
int-abs
/
numlelsdel-01
oelem
/intlista/
lel
int-abs
/
bet
int-abs
/
lels-02
int-abs
/
sub-le
int-gcd
/
div-mult
int-mult
/
associativity
int-mult
/
commutativity
int-abs
/
Sub-def
int-abs
/
sub-le-01
int-abs
/
succ-01
int-basic2
/
add-a
int-basic2
/
add-c
int-abs
/
sub-ls-01
intnat
/
rax-01
nat
/
pred-03
intnat
/
num-i2n-le-02
int-abs
/
leone
int-abs
/
lels
int-abs
/
lels-03
nat
/
ls-01
nat-basic2
/
s
intnat
/
labs
int-abs
/
abs
oelem
/intlista/
irreflexivity
nat-basic2
/
a
nat-basic2
/
c
int-abs
/
sub-sub
int-abs
/
lels-01
int-basic1
/
ls-01