DOC. 28 NORDSTRÖM'S
THEORY OF GRAVITATION
597
Published
in
Annalen der
Physik
44
(1914):
321-328. Received
19 February 1914, published
12 May
1914.
[1]For
a
brief discussion of Einstein
and
Fokker's
collaboration,
see
the
editorial
note,
"Einstein
on
Gravitation
and
Relativity:
The Collaboration
with
Marcel
Grossmann,"
pp.
299-
300.
See
also Norton 1992b for
a
discussion of
this
paper.
[2]Nordström
1913b and Einstein 1913c
(Doc. 17).
For
a
historical
study
of Nordström's
work,
see
Isaksson
1985.
[3]For
a
discussion of Einstein's
recognition
of
the
analogy
between the mathematical
prob-
lem
posed
by a
generalized theory
of
relativity
and
the
Gaussian
theory
of
surfaces,
see
the
editorial
note,
"Einstein's Research Notes
on a
Generalized
Theory
of
Relativity,"
pp.
193-
195.
[4]This
section summarizes results
presented
earlier
in
Einstein and Grossmann
1913
(Doc.
13), part
1,
§6,
and Einstein 1913c
(Doc. 17), §5.
[5]Einstein
and Grossmann
1914a,
published
earlier
as
Einstein and Grossmann
1913
(Doc.
13).
[6]For
the notion of
"naturally
measured interval"
("näturlich
gemessenen
Abstand"),
see
Einstein and Grossmann
1913
(Doc. 13), part
1,
§3.
[7]This
parallelism
between Euclidean
and
generalized vector analysis
is
developed
in
Ein-
stein and
Grossmann 1913
(Doc.
13),
part 2.
For
a
discussion
of
the
historical
context
of
this
argument,
see
Reich
1994,
sec.
5.3,
and Norton
1992a,
pp.
302-310.
[8]See
Einstein 1913c
(Doc. 17),
p.
1257.
[9]See, e.g.,
the
discussion
in
Laue
1913,
§28,
and
[pp.
65-68]
of Einstein's
unpublished
manuscript
on
special relativity
(Doc.
1).
[10]For
Einstein's earlier discussion of Nordström's
theory,
see
Einstein 1913c
(Doc. 17),
§2.
[11]Einstein's earlier derivation of Nordström's
field
equation
was
based
on a
consideration
of conservation
laws,
a
consideration
analogous
to
the
one
by
which Einstein had
obtained the
field
equations
of his
own
theory (see
Einstein 1913c
[Doc. 17],
p.
1254).
[12]See
Bianchi
1896, chap.
2.
[13]See
Einstein 1913c
(Doc.
17), p.
1253.
[14]"guv"
should
be
"yuv"
[15]For
a
similar
comment
on
Nordström's
theory,
see
Einstein
1913c
(Doc.
17),
p.
1254.
[16]See
Einstein and Grossmann
1913
(Doc. 13), part
2,
§4,
p.
36,
where Einstein and Gross-
mann
reject
the
Ricci tensor,
derived from the fourth-rank Riemann
tensor,
as a
possible can-
didate for
a
gravitational tensor.