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E
2
1
− E
2
sin
2
Φ
1
−
1
cos
Φ
>
0
P
Λ
P
Φ
Q
Λ
Q
Φ
P
Φ
Q
Λ
=
A
1
=
P
Λ
Q
Φ
−
(1.202)
due to
−
π/
2
<Φ<
+
π/
2
⇒
cos
Φ>
0
(1.203)
q. e. d.
2
Box 1.26 (Right Korn-Lichtenstein equations, UMP of
S
r
, harmonicity, orientation).
Right Korn-Lichtenstein equations:
(1st)
p
λ
=+
g
11
g
22
g
22
q
φ
,
φ
=
−
g
11
q
λ
(2nd)
,
(1.204)
g
11
g
22
p
φ
,
φ
=+
g
22
(1st)
q
λ
=
−
g
11
p
λ
(2nd);
g
11
g
22
g
11
=
1
cos
φ
;
g
22
=cos
φ,
(1.205)
r
cos
φ
,p
λ
=
r
(KL 2nd)
,
(UMP right)
q
φ
=
(1.206)
(UMP right)
q
λ
=0
,p
φ
=0 (KL1st)
.
Right integrability conditions:
Δ
λ,φ
p
=
g
11
g
22
p
φ
+
g
22
g
11
p
λ
=0
,
(1.207)
φ
λ
Δ
λ,φ
q
=
g
11
g
22
q
φ
+
g
22
g
11
q
λ
=0;
φ
λ
g
11
g
22
p
φ
=0
,
g
22
r
cos
Φ
g
11
p
λ
=
(1st)
⇒
Δ
λ,φ
p
=
g
11
g
22
p
φ
+
g
22
g
11
p
λ
=
r
cos
φ
= 0
(1.208)
λ
φ
λ
q.e.d
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