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Sophie Quinton
rtproofs
Commits
58d8d0ab
Commit
58d8d0ab
authored
Sep 20, 2018
by
Sergey Bozhko
Committed by
Sergey Bozhko
Apr 05, 2019
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Add lemmas about arrivals_between
parent
83918615
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2
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2 changed files
with
31 additions
and
24 deletions
+31
24
model/arrival/basic/arrival_sequence.v
model/arrival/basic/arrival_sequence.v
+11
22
model/arrival/basic/task_arrival.v
model/arrival/basic/task_arrival.v
+20
2
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model/arrival/basic/arrival_sequence.v
View file @
58d8d0ab
...
...
@@ 110,6 +110,16 @@ Module ArrivalSequence.
(* First, we show that the set of arriving jobs can be split
into disjoint intervals. *)
Lemma
job_arrived_between_cat
:
forall
t1
t
t2
,
t1
<=
t
>
t
<=
t2
>
jobs_arrived_between
t1
t2
=
jobs_arrived_between
t1
t
++
jobs_arrived_between
t
t2
.
Proof
.
unfold
jobs_arrived_between
;
intros
t1
t
t2
GE
LE
.
by
rewrite
(@
big_cat_nat
_
_
_
t
).
Qed
.
Lemma
jobs_arrived_between_mem_cat
:
forall
j
t1
t
t2
,
t1
<=
t
>
...
...
@@ 117,28 +127,7 @@ Module ArrivalSequence.
j
\
in
jobs_arrived_between
t1
t2
=
(
j
\
in
jobs_arrived_between
t1
t
++
jobs_arrived_between
t
t2
).
Proof
.
unfold
jobs_arrived_between
;
intros
j
t1
t
t2
GE
LE
.
apply
/
idP
/
idP
.
{
intros
IN
.
apply
mem_bigcat_nat_exists
in
IN
;
move
:
IN
=>
[
arr
[
IN
/
andP
[
GE1
LT2
]]].
rewrite
mem_cat
;
apply
/
orP
.
by
destruct
(
ltnP
arr
t
)
;
[
left

right
]
;
apply
mem_bigcat_nat
with
(
j
:
=
arr
)
;
try
(
by
apply
/
andP
;
split
).
}
{
rewrite
mem_cat
;
move
=>
/
orP
[
LEFT

RIGHT
].
{
apply
mem_bigcat_nat_exists
in
LEFT
;
move
:
LEFT
=>
[
t0
[
IN0
/
andP
[
GE0
LT0
]]].
apply
mem_bigcat_nat
with
(
j
:
=
t0
)
;
last
by
done
.
by
rewrite
GE0
/=
;
apply
:
(
leq_trans
LT0
).
}
{
apply
mem_bigcat_nat_exists
in
RIGHT
;
move
:
RIGHT
=>
[
t0
[
IN0
/
andP
[
GE0
LT0
]]].
apply
mem_bigcat_nat
with
(
j
:
=
t0
)
;
last
by
done
.
by
rewrite
LT0
andbT
;
apply
:
(
leq_trans
_
GE0
).
}
}
by
intros
j
t1
t
t2
GE
LE
;
rewrite
(
job_arrived_between_cat
_
t
).
Qed
.
Lemma
jobs_arrived_between_sub
:
...
...
model/arrival/basic/task_arrival.v
View file @
58d8d0ab
Require
Import
rt
.
util
.
all
.
Require
Import
rt
.
model
.
arrival
.
basic
.
arrival_sequence
rt
.
model
.
arrival
.
basic
.
task
rt
.
model
.
arrival
.
basic
.
job
.
From
mathcomp
Require
Import
ssreflect
ssrbool
eqtype
ssrnat
seq
path
.
From
mathcomp
Require
Import
ssreflect
ssrbool
eqtype
ssrnat
seq
path
bigop
.
(* Properties of job arrival. *)
Module
TaskArrival
.
...
...
@@ 59,6 +59,24 @@ Module TaskArrival.
Definition
num_arrivals_of_task
(
t1
t2
:
time
)
:
=
size
(
arrivals_of_task_between
t1
t2
).
(* In this section we prove some basic lemmas about number of arrivals of task. *)
Section
Lemmas
.
(* We show that the number of arrivals of task can be split into disjoint intervals. *)
Lemma
num_arrivals_of_task_cat
:
forall
t
t1
t2
,
t1
<=
t
<=
t2
>
num_arrivals_of_task
t1
t2
=
num_arrivals_of_task
t1
t
+
num_arrivals_of_task
t
t2
.
Proof
.
move
=>
t
t1
t2
/
andP
[
GE
LE
].
rewrite
/
num_arrivals_of_task
/
arrivals_of_task_between
/
arrivals_between
/
jobs_arrived_between
.
rewrite
(@
big_cat_nat
_
_
_
t
)
//=.
by
rewrite
filter_cat
size_cat
.
Qed
.
End
Lemmas
.
End
NumberOfArrivals
.
(* In this section, we prove some basic results regarding the
...
...
@@ 72,7 +90,7 @@ Module TaskArrival.
Variable
job_arrival
:
Job
>
time
.
Variable
job_task
:
Job
>
Task
.
(* Consider any arrival sequence with consistent,
duplicatefre
e arrivals, ... *)
(* Consider any arrival sequence with consistent,
nonduplicat
e arrivals, ... *)
Variable
arr_seq
:
arrival_sequence
Job
.
Hypothesis
H_consistent_arrivals
:
arrival_times_are_consistent
job_arrival
arr_seq
.
Hypothesis
H_no_duplicate_arrivals
:
arrival_sequence_is_a_set
arr_seq
.
...
...
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