Theorem hbsum1 6983

Description: Bound-variable hypothesis builder for sum.

Hypothesis

Ref	Expression
hbsum1.1	|- (x e. A -> A.k x e. A)

Assertion

Ref	Expression
hbsum1	|- (x e. sum_k e. A B -> A.k x e. sum_k e. A B)

Distinct variable groups:   x,A   x,B   x,k

Proof of Theorem hbsum1

Step	Hyp	Ref	Expression
1		df-sum 6980	. 2 |- sum_k e. A B = ({y | E.mE.n e. (ZZ>` m)(A = (m...n) /\ y e. ((<.m, + >. seq ({<.k, z>. | z = B} |` ZZ))` n))} u. U.{y | E.m e. ZZ (A = (ZZ>` m) /\ (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) ~~> y)})
2		ax-17 973	. . . . . 6 |- (n e. (ZZ>` m) -> A.k n e. (ZZ>` m))
3		hbsum1.1	. . . . . . . 8 |- (x e. A -> A.k x e. A)
4		ax-17 973	. . . . . . . 8 |- (x e. (m...n) -> A.k x e. (m...n))
5	3, 4	hbeq 1568	. . . . . . 7 |- (A = (m...n) -> A.k A = (m...n))
6		ax-17 973	. . . . . . . . 9 |- (y e. <.m, + >. -> A.k y e. <.m, + >.)
7		ax-17 973	. . . . . . . . 9 |- (y e. seq -> A.k y e. seq )
8		hbopab1 2819	. . . . . . . . . 10 |- (y e. {<.k, z>. | z = B} -> A.k y e. {<.k, z>. | z = B})
9		ax-17 973	. . . . . . . . . 10 |- (y e. ZZ -> A.k y e. ZZ)
10	8, 9	hbres 3376	. . . . . . . . 9 |- (y e. ({<.k, z>. | z = B} |` ZZ) -> A.k y e. ({<.k, z>. | z = B} |` ZZ))
11	6, 7, 10	hbopr 3987	. . . . . . . 8 |- (y e. (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) -> A.k y e. (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)))
12		ax-17 973	. . . . . . . 8 |- (y e. n -> A.k y e. n)
13	11, 12	hbfv 3735	. . . . . . 7 |- (y e. ((<.m, + >. seq ({<.k, z>. | z = B} |` ZZ))` n) -> A.k y e. ((<.m, + >. seq ({<.k, z>. | z = B} |` ZZ))` n))
14	5, 13	hban 1011	. . . . . 6 |- ((A = (m...n) /\ y e. ((<.m, + >. seq ({<.k, z>. | z = B} |` ZZ))` n)) -> A.k(A = (m...n) /\ y e. ((<.m, + >. seq ({<.k, z>. | z = B} |` ZZ))` n)))
15	2, 14	hbrex 1691	. . . . 5 |- (E.n e. (ZZ>` m)(A = (m...n) /\ y e. ((<.m, + >. seq ({<.k, z>. | z = B} |` ZZ))` n)) -> A.kE.n e. (ZZ>` m)(A = (m...n) /\ y e. ((<.m, + >. seq ({<.k, z>. | z = B} |` ZZ))` n)))
16	15	hbex 1008	. . . 4 |- (E.mE.n e. (ZZ>` m)(A = (m...n) /\ y e. ((<.m, + >. seq ({<.k, z>. | z = B} |` ZZ))` n)) -> A.kE.mE.n e. (ZZ>` m)(A = (m...n) /\ y e. ((<.m, + >. seq ({<.k, z>. | z = B} |` ZZ))` n)))
17	16	hbab 1470	. . 3 |- (x e. {y | E.mE.n e. (ZZ>` m)(A = (m...n) /\ y e. ((<.m, + >. seq ({<.k, z>. | z = B} |` ZZ))` n))} -> A.k x e. {y | E.mE.n e. (ZZ>` m)(A = (m...n) /\ y e. ((<.m, + >. seq ({<.k, z>. | z = B} |` ZZ))` n))})
18		ax-17 973	. . . . . 6 |- (m e. ZZ -> A.k m e. ZZ)
19		ax-17 973	. . . . . . . 8 |- (x e. (ZZ>` m) -> A.k x e. (ZZ>` m))
20	3, 19	hbeq 1568	. . . . . . 7 |- (A = (ZZ>` m) -> A.k A = (ZZ>` m))
21		ax-17 973	. . . . . . . . 9 |- (n e. <.m, + >. -> A.k n e. <.m, + >.)
22		ax-17 973	. . . . . . . . 9 |- (n e. seq -> A.k n e. seq )
23		hbopab1 2819	. . . . . . . . . 10 |- (n e. {<.k, z>. | z = B} -> A.k n e. {<.k, z>. | z = B})
24		ax-17 973	. . . . . . . . . 10 |- (n e. ZZ -> A.k n e. ZZ)
25	23, 24	hbres 3376	. . . . . . . . 9 |- (n e. ({<.k, z>. | z = B} |` ZZ) -> A.k n e. ({<.k, z>. | z = B} |` ZZ))
26	21, 22, 25	hbopr 3987	. . . . . . . 8 |- (n e. (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) -> A.k n e. (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)))
27		ax-17 973	. . . . . . . 8 |- (n e. ~~> -> A.k n e. ~~> )
28		ax-17 973	. . . . . . . 8 |- (n e. y -> A.k n e. y)
29	26, 27, 28	hbbr 2663	. . . . . . 7 |- ((<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) ~~> y -> A.k(<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) ~~> y)
30	20, 29	hban 1011	. . . . . 6 |- ((A = (ZZ>` m) /\ (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) ~~> y) -> A.k(A = (ZZ>` m) /\ (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) ~~> y))
31	18, 30	hbrex 1691	. . . . 5 |- (E.m e. ZZ (A = (ZZ>` m) /\ (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) ~~> y) -> A.kE.m e. ZZ (A = (ZZ>` m) /\ (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) ~~> y))
32	31	hbab 1470	. . . 4 |- (x e. {y | E.m e. ZZ (A = (ZZ>` m) /\ (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) ~~> y)} -> A.k x e. {y | E.m e. ZZ (A = (ZZ>` m) /\ (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) ~~> y)})
33	32	hbuni 2513	. . 3 |- (x e. U.{y | E.m e. ZZ (A = (ZZ>` m) /\ (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) ~~> y)} -> A.k x e. U.{y | E.m e. ZZ (A = (ZZ>` m) /\ (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) ~~> y)})
34	17, 33	hbun 2189	. 2 |- (x e. ({y | E.mE.n e. (ZZ>` m)(A = (m...n) /\ y e. ((<.m, + >. seq ({<.k, z>. | z = B} |` ZZ))` n))} u. U.{y | E.m e. ZZ (A = (ZZ>` m) /\ (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) ~~> y)}) -> A.k x e. ({y | E.mE.n e. (ZZ>` m)(A = (m...n) /\ y e. ((<.m, + >. seq ({<.k, z>. | z = B} |` ZZ))` n))} u. U.{y | E.m e. ZZ (A = (ZZ>` m) /\ (<.m, + >. seq ({<.k, z>. | z = B} |` ZZ)) ~~> y)}))
35	1, 34	hbxfr 1566	1 |- (x e. sum_k e. A B -> A.k x e. sum_k e. A B)

Syntax hints:   -> wi 3   /\ wa 223  A.wal 956   = wceq 958   e. wcel 960  E.wex 982  {cab 1466  E.wrex 1649   u. cun 2048  <.cop 2415  U.cuni 2507   class class class wbr 2624  {copab 2671   |` cres 3178  ` cfv 3188  (class class class)co 3969   + caddc 5249  ZZcz 5310  ZZ>cuz 6418  ...cfz 6468   seq cseqz 6532   ~~> cli 6974  sum_csu 6979

This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 964  ax-gen 965  ax-8 966  ax-10 968  ax-11 969  ax-12 970  ax-13 971  ax-14 972  ax-17 973  ax-4 975  ax-5o 977  ax-6o 980  ax-9o 1125  ax-10o 1142  ax-16 1212  ax-11o 1220  ax-ext 1462  ax-sep 2708  ax-pow 2748  ax-pr 2785

This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225  df-ex 983  df-sb 1174  df-eu 1384  df-mo 1385  df-clab 1467  df-cleq 1472  df-clel 1475  df-ne 1590  df-rex 1653  df-v 1815  df-dif 2052  df-un 2053  df-in 2054  df-ss 2056  df-nul 2284  df-pw 2406  df-sn 2416  df-pr 2417  df-op 2420  df-uni 2508  df-br 2625  df-opab 2672  df-xp 3190  df-cnv 3192  df-dm 3194  df-rn 3195  df-res 3196  df-ima 3197  df-fv 3204  df-opr 3971  df-sum 6980

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