DOC.
10
RESEARCH NOTES
235
[eq. 95]
[eq. 96]
3lgG digG
c
3fT
+
V~0üc
aigG,
pa
~*ga
dy
dxö
dxa
dxa
dxa dxa
aa
^
3lgO
^^pa
+
2
9
dxa
V
^Kp
(
"Ik
dxt
I
+
8'P
»'i
l
p
k a
kdx
y
j
k
p
a
ß
[eq. 97]
KaX
3ym
1[72]
1
4^ä^ä^+2«
4
war
richtig.
[70]Einstein calculates the Riemann
curvature
scalar
cp
produced
by
fully contracting
the
Riemann
curvature tensor
[eq.
91]
of
[p.
27].
The
expansion
of
p
continues until
[p. 32].
[71]Einstein
begins expansion
of the
first
term
in
the second summation of
[eq. 94].
The
re-
sult
is 1/4
times the
sum
of the three underlined
terms
[eq.
95],
[eq.
96],
[eq. 97].
[72]Einstein
begins to
recalculate the
term
which
yielded expression
[eq.
97],
but
stops
since the
original
"was correct"
("war richtig").
[p. 29]
[73]
i
I K m
[eq.
98]
a
P
^Slo
dgu
\
dg,^\Km
YpaX'm^K/
+
dx:
do
^&Kp
dx
^
dx dx
/ V
m K
P
/
'Sic
^5
dSi(y
io
dypmw'
YpaXm^K/~
~Yk/
dx,