D O C . 6 7 J U L Y 1 9 1 9 5 7 The substitution determinant , so the left-hand side of (2) dimin- ishes like . C is constant, and thus . Now, is made up of the terms . is generally valid. The second term on the right-hand side is, in our case, 〈equal〉 . From this it follows that . becomes infinite as , vanishes as , and hence has the limiting value zero and hence also = 0 q.e.d. Should it be proved for the polar coordinates as well?[5] With cordial regards, I am ever devotedly yours, J. Grommer I would be heartily pleased to receive a few lines from you. Today I received word from the Advisory Board about the 1200 marks made available to me.[6] ∂xi- ∂xk -------- c r2 ---- ∂xi ∂xk′ --------- c---------r2′ D′(x′) D x) ( --------------- R6 r6 ----- -– C r6 ---- lim r=∞ r2 ν 0= v g{ }{ }gst αβ γ pq r ⎫′∂xp---------- ′∂xq---------- ∂xα --------- ∂xβ ∂xγ ∂xr′ ∂2xγ ∂xλ′∂xμ′ -------------------- ---------- ∂xλ-∂xμ′----------′ ∂xα ∂xβ = 1 2 -- - δαγ xβ′ 1 2 -- - δγβ xα′ 1 2 --δαβ - xγ′⎠ + 1 R2 ----- - lim r=∞ αβ γ ⎬[=]0 gst r4 g 1 r6 ---- r2{ }{ }gst lim r=∞ r2 ν
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